001A_HTML.ipynb

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  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "view-in-github",
        "colab_type": "text"
      },
      "source": [
        "<a href=\"https://colab.research.google.com/github/MohanVishe/Notes/blob/main/001A_HTML.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "# Hyper Text Markup Language :\n",
        "Use to create website/webpages\n",
        "\n",
        "File name should be end with  `.html`\n",
        "\n",
        "`index.html` for website root address\n",
        "\n",
        "To see any website HTML code use  `\"Inspect Element\"` or `\"View Page Source\"` on browser right clicking on webpage.\n"
      ],
      "metadata": {
        "id": "htgATVdBeYVR"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "* HTML is case insensitive Language"
      ],
      "metadata": {
        "id": "YN1W1JvKigHt"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "<H1> and <h1>\n",
        "# Both are same\n",
        "<p> and <P>\n",
        "<title> and <TITLE>"
      ],
      "metadata": {
        "id": "CXo-nqBYhWWA"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "* To remove horizontal scrolling go to\n",
        "   "
      ],
      "metadata": {
        "id": "pcla_OpdqQsQ"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "VScode : View : Word Wrap\n",
        "# This will take all content in line on extream right on second line"
      ],
      "metadata": {
        "id": "tOic6KyXUVfG"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "* HTML comments"
      ],
      "metadata": {
        "id": "uXLtXtEDhnAA"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "<!--This text will not print-->\n",
        "#  You have select text you want to comment out and CTRL+/"
      ],
      "metadata": {
        "id": "4LE769zrhiAa"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "# Tag :\n",
        "A tag is like a container for content or contain other tags\n",
        "\n"
      ],
      "metadata": {
        "id": "_JqJEkM9kyOs"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "\n",
        "* `<html> </html>` : This is example of tag called html tag  \n",
        "  * `<html>` This is starting point (opening tag)  and `</html>` this is end point (closing tag) between them we can write content or other tags"
      ],
      "metadata": {
        "id": "tPgaerEUmN6t"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "<html>  </html>\n",
        "# This is root of an  HTML page"
      ],
      "metadata": {
        "id": "p75cBYNKmKyV"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "## HTML element:\n",
        "Everything from starting to ending tag"
      ],
      "metadata": {
        "id": "ysLEx8runiHh"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "<body>\n",
        "\"content\"\n",
        "</body>"
      ],
      "metadata": {
        "id": "5OSzs8eBnxYq"
      },
      "execution_count": null,
      "outputs": []
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    {
      "cell_type": "markdown",
      "source": [
        "**Note: Basic HTML Tags and Their Usage**\n",
        "\n",
        "HTML (Hypertext Markup Language) is the standard markup language used to create web pages. It uses various tags to structure and format content. Here are some essential HTML tags and their attributes:\n",
        "\n",
        "1. **HTML Attributes:**\n",
        "   Attributes provide additional information to HTML tags.\n",
        "   Example: `<html lang=\"en\">`\n",
        "\n",
        "2. **Heading Tags:**\n",
        "   Used for displaying headings on a webpage. Ranges from h1 (most important) to h6 (least important).\n",
        "   Example:\n",
        "   ```\n",
        "   <h1>Heading 1 (Most Important)</h1>\n",
        "   <h2>Heading 2</h2>\n",
        "   <h3>Heading 3</h3>\n",
        "   <h4>Heading 4</h4>\n",
        "   <h5>Heading 5</h5>\n",
        "   <h6>Heading 6 (Least Important)</h6>\n",
        "   ```\n",
        "\n",
        "3. **Paragraph Tag:**\n",
        "   Used for adding paragraphs of text.\n",
        "   Example: `<p>This is a sample paragraph.</p>`\n",
        "\n",
        "4. **Anchor Tag:**\n",
        "   Used to create links to other web pages.\n",
        "   Example: `<a href=\"https://google.com\">Google</a>`\n",
        "\n",
        "5. **Image Tag:**\n",
        "   Used to embed images into a webpage.\n",
        "   Example: `<img src=\"/image.png\" alt=\"Random Image\">`\n",
        "\n",
        "6. **Relative URL:**\n",
        "   A URL that is relative to the current web page's location.\n",
        "\n",
        "7. **Line Break Tag (br):**\n",
        "   Adds a line break, creating a new line in the content.\n",
        "   Example: `<br>`\n",
        "\n",
        "8. **Bold, Italic & Underline Tags:**\n",
        "   Used for text formatting.\n",
        "   Example:\n",
        "   ```\n",
        "   <b>Bold</b>\n",
        "   <i>Italic</i>\n",
        "   <u>Underline</u>\n",
        "   ```\n",
        "\n",
        "9. **Big & Small Tags:**\n",
        "   Displays text as big or small.\n",
        "   Example:\n",
        "   ```\n",
        "   <big>Big Text</big>\n",
        "   <small>Small Text</small>\n",
        "   ```\n",
        "\n",
        "10. **Horizontal Rule Tag (hr):**\n",
        "    Creates a horizontal line to separate content.\n",
        "    Example: `<hr>`\n",
        "\n",
        "11. **Subscript & Superscript Tags:**\n",
        "    Used for subscript and superscript text.\n",
        "    Example writing chemical formula and mathematical power etc:\n",
        "    ```\n",
        "    <sub>Subscript</sub>\n",
        "    <sup>Superscript</sup>\n",
        "    ```\n",
        "\n",
        "\n",
        "12. **Preformatted Text Tag (pre):**\n",
        "    Displays text as is, preserving spaces and line breaks.\n",
        "    Example:\n",
        "    ```\n",
        "    <pre>\n",
        "    This\n",
        "\n",
        "    is a sample\n",
        "\n",
        "    text.\n",
        "    </pre>\n",
        "    ```\n",
        "\n",
        "These are some of the basic HTML tags and their usage in creating web content. HTML tags, along with their attributes, allow developers to structure and format content according to their needs."
      ],
      "metadata": {
        "id": "agL5rLaZxldP"
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    },
    {
      "cell_type": "markdown",
      "source": [
        "# HTML Basic Page :"
      ],
      "metadata": {
        "id": "AcxI5s85gulD"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        " `<head>` and `<body>`\n",
        "Two fundamental components of a web page. By separating these elements, HTML allows for cleaner and more organized code, making it easier for developers to manage and maintain web pages effectively."
      ],
      "metadata": {
        "id": "hTA0WjG2UGAT"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "* To directly get webpage template"
      ],
      "metadata": {
        "id": "4DzyrxBBUKkx"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "!\n",
        "# Press enter after typing to get it by Emmet"
      ],
      "metadata": {
        "id": "MQw0hZiIU6Jn"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [],
      "metadata": {
        "id": "DOPDeR2awDs4"
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      "cell_type": "markdown",
      "source": [
        "## 1. `<head>`:\n",
        "The `<head>` element is a container for metadata and other non-visible elements that provide information about the web page. It includes elements such as `<title>`, `<meta>`, `<link>`, `<style>`, `<script>`, and more. The content within the `<head>` is not directly displayed on the web page but is essential for various aspects of web page functionality, search engine optimization (SEO), and presentation.\n",
        "\n",
        "Common elements within the `<head>` section include:\n",
        "\n",
        "- `<title>`: Sets the title of the web page, which appears in the browser's title bar or tab.\n",
        "- `<meta>`: Provides metadata about the page, such as character encoding, viewport settings, and author information.\n",
        "- `<link>`: Specifies external resources, such as stylesheets or icon files.\n",
        "- `<script>`: Declares JavaScript code or links to external JavaScript files.\n",
        "- `<style>`: Contains CSS code that defines styles for the web page.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<!DOCTYPE html>\n",
        "<html>\n",
        "<head>\n",
        "    <meta charset=\"UTF-8\">\n",
        "    <title>My Web Page</title>\n",
        "    <link rel=\"stylesheet\" href=\"styles.css\">\n",
        "    <script src=\"script.js\"></script>\n",
        "</head>\n",
        "<body>\n",
        "    <!-- Content of the web page goes here -->\n",
        "</body>\n",
        "</html>\n",
        "```\n",
        "\n",
        "## 2. `<body>`:\n",
        "The `<body>` element contains the visible content of the web page that users see and interact with. It includes elements like headings, paragraphs, images, links, forms, and other HTML elements that make up the actual content of the web page. The content within the `<body>` section is what is displayed on the browser window when the web page is loaded.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<!DOCTYPE html>\n",
        "<html>\n",
        "<head>\n",
        "    <meta charset=\"UTF-8\">\n",
        "    <title>My Web Page</title>\n",
        "</head>\n",
        "<body>\n",
        "    <h1>Welcome to My Web Page</h1>\n",
        "    <p>This is some text content on my page.</p>\n",
        "    <img src=\"example.jpg\" alt=\"An example image\">\n",
        "    <!-- Other content elements go here -->\n",
        "</body>\n",
        "</html>\n",
        "```\n",
        "\n",
        "In summary, the `<head>` element is used for metadata, including title, stylesheets, scripts, and other essential information about the web page. The `<body>` element, on the other hand, contains the actual visible content that users interact with."
      ],
      "metadata": {
        "id": "TsmuNnLoTObK"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "In HTML, `<header>`, `<main>`, and `<footer>` are semantic elements used to structure the content of a web page. They provide meaningful information about the purpose and role of different sections of the page. These elements are part of the HTML5 specification and help in creating more accessible and search engine-friendly websites. Let's explain each one:\n",
        "\n",
        "### 1. `<header>`:\n",
        "The `<header>` element represents the introductory or navigational section of a web page. It typically includes elements like logos, site titles, navigation menus, and sometimes introductory content. It is usually placed at the top of the page, but its exact position can be controlled using CSS styles. The header is not limited to just the top part; it can also be used to mark the header section of a specific section within the page.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<header>\n",
        "    <h1>My Website</h1>\n",
        "    <nav>\n",
        "        <ul>\n",
        "            <li><a href=\"/\">Home</a></li>\n",
        "            <li><a href=\"/about\">About</a></li>\n",
        "            <li><a href=\"/contact\">Contact</a></li>\n",
        "        </ul>\n",
        "    </nav>\n",
        "</header>\n",
        "```\n",
        "\n",
        "### 2. `<main>`:\n",
        "The `<main>` element represents the main content of the web page. It should not include any content that is repeated across multiple pages, such as headers, footers, or sidebars. The main content of a page usually consists of articles, blog posts, product listings, or any other content that is unique to that particular page. A web page should have only one `<main>` element, and it should not be nested inside other `<main>` elements.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<main>\n",
        "    <article>\n",
        "        <h2>Article Title</h2>\n",
        "        <p>This is the main content of the article.</p>\n",
        "    </article>\n",
        "</main>\n",
        "```\n",
        "\n",
        "### 3. `<footer>`:\n",
        "The `<footer>` element represents the footer section of a web page. It typically contains information about the website, copyright notices, contact details, social media links, and other relevant information. The footer is usually placed at the bottom of the page, but like the header, its position can be controlled using CSS styles. Similar to the header, a footer can also be used to mark the footer section of a specific section within the page.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<footer>\n",
        "    <p>&copy; 2023 My Website. All rights reserved.</p>\n",
        "    <nav>\n",
        "        <ul>\n",
        "            <li><a href=\"/privacy\">Privacy Policy</a></li>\n",
        "            <li><a href=\"/terms\">Terms of Service</a></li>\n",
        "        </ul>\n",
        "    </nav>\n",
        "</footer>\n",
        "```\n",
        "\n",
        "Using semantic elements like `<header>`, `<main>`, and `<footer>` not only makes the HTML code more organized and readable but also helps screen readers and search engines understand the structure and purpose of different sections on the web page. This contributes to better accessibility and search engine optimization (SEO)."
      ],
      "metadata": {
        "id": "Y7n77om3gYMt"
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    },
    {
      "cell_type": "markdown",
      "source": [
        "### * Inside Main Tag: Additional HTML Tags\n",
        "\n",
        "\n",
        "\n",
        "\n",
        "Within the `<main>` tag, various HTML tags can be used to structure content. Here are some additional HTML tags and their descriptions:\n",
        "\n",
        "**Section Tag:**\n",
        "Used to define a section of a webpage.\n",
        "Example: `<section>For a section on your page</section>`\n",
        "\n",
        "**Article Tag:**\n",
        "Used to define an article on a webpage.\n",
        "Example: `<article>For an article on your page</article>`\n",
        "\n",
        "**Aside Tag:**\n",
        "Used for content that is tangentially related to the main content, often used for advertisements.\n",
        "Example: `<aside>For content aside main content (ads)</aside>`\n",
        "\n",
        "**Revisiting Anchor Tag:**\n",
        "- `<a>` tag with `target=\"_main\"`: Opens the link in a new tab.\n",
        "  Example: `<a href=\"https://google.com\" target=\"_main\">Google</a>`\n",
        "- `<a>` tag wrapping an `<img>`: Creates a clickable image.\n",
        "  Example: `<a href=\"https://google.com\"><img src=\"link\"></a>`\n",
        "\n",
        "**Revisiting Image Tag:**\n",
        "- Setting height and width attributes for images.\n",
        "  Example:\n",
        "  ```\n",
        "  <img src=\"link\" height=\"50px\">\n",
        "  <img src=\"link\" width=\"50px\">\n",
        "  ```\n",
        "\n",
        "**Div Tag:**\n",
        "Used as a container for other HTML elements. It's a block-level element that takes up the full width.\n",
        "Example: `<div>Div is a container used for other HTML elements</div>`\n",
        "\n",
        "\n",
        "- `<address>`\n",
        "- `<article>`\n",
        "- `<aside>`\n",
        "- `<blockquote>`\n",
        "- `<canvas>`\n",
        "- `<dd>`\n",
        "- `<div>`\n",
        "- `<dl>`\n",
        "- `<dt>`\n",
        "- `<fieldset>`\n",
        "- `<figcaption>`\n",
        "- `<figure>`\n",
        "- `<footer>`\n",
        "- `<form>`\n",
        "- `<h1>` to `<h6>`\n",
        "- `<header>`\n",
        "- `<hr>`\n",
        "- `<li>`\n",
        "- `<main>`\n",
        "- `<nav>`\n",
        "- `<noscript>`\n",
        "- `<ol>`\n",
        "- `<p>`\n",
        "- `<pre>`\n",
        "- `<section>`\n",
        "- `<table>`\n",
        "- `<tfoot>`\n",
        "- `<ul>`\n",
        "- `<video>`\n",
        "\n",
        "\n",
        "\n",
        "**Span Tag:**\n",
        "Similar to the `<div>` tag but used as an inline element that takes up width according to its content.\n",
        "Example: `<span>Span is also a container used for other HTML elements</span>`\n",
        "\n",
        "\n",
        "- `<a>`\n",
        "- `<abbr>`\n",
        "- `<acronym>`\n",
        "- `<b>`\n",
        "- `<bdo>`\n",
        "- `<big>`\n",
        "- `<br>`\n",
        "- `<button>`\n",
        "- `<cite>`\n",
        "- `<code>`\n",
        "- `<dfn>`\n",
        "- `<em>`\n",
        "- `<i>`\n",
        "- `<img>`\n",
        "- `<input>`\n",
        "- `<kbd>`\n",
        "- `<label>`\n",
        "- `<map>`\n",
        "- `<object>`\n",
        "- `<tt>`\n",
        "- `<var>`\n",
        "- `<output>`\n",
        "- `<q>`\n",
        "- `<samp>`\n",
        "- `<script>`\n",
        "- `<select>`\n",
        "- `<small>`\n",
        "- `<span>`\n",
        "- `<strong>`\n",
        "- `<sub>`\n",
        "- `<sup>`\n",
        "- `<textarea>`\n",
        "- `<time>`\n",
        "\n",
        "\n",
        "These additional HTML tags further enhance the structure and formatting of content within the `<main>` tag of a webpage. Each tag serves a specific purpose in organizing and styling content to create a coherent and visually appealing web page."
      ],
      "metadata": {
        "id": "fj7ZORfazGS7"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "### **List in HTML:**\n",
        "\n",
        "Lists are used to represent real-life list data.\n",
        "\n",
        "1. **Unordered List:**\n",
        "```html\n",
        "<ul>\n",
        "    <li>Apple</li>\n",
        "    <li>Mango</li>\n",
        "</ul>\n",
        "```\n",
        "Output:\n",
        "- Apple\n",
        "- Mango\n",
        "\n",
        "2. **Ordered List:**\n",
        "```html\n",
        "<ol>\n",
        "    <li>Apple</li>\n",
        "    <li>Mango</li>\n",
        "</ol>\n",
        "```\n",
        "Output:\n",
        "1. Apple\n",
        "2. Mango\n",
        "\n",
        "### **Tables in HTML:**\n",
        "\n",
        "Tables are used to represent real-life table data.\n",
        "\n",
        "```html\n",
        "<table>\n",
        "    <tr>\n",
        "        <th>Name</th>\n",
        "        <th>Roll No</th>\n",
        "    </tr>\n",
        "    <tr>\n",
        "        <td>Raj</td>\n",
        "        <td>1664</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "        <td>Mohan</td>\n",
        "        <td>1890</td>\n",
        "    </tr>\n",
        "</table>\n",
        "```\n",
        "Output:\n",
        "\n",
        "| Name   | Roll No |\n",
        "|--------|---------|\n",
        "| Raj    | 1664    |\n",
        "| Mohan  | 1890    |\n",
        "\n",
        "1. **Caption in Tables:**\n",
        "```html\n",
        "<table>\n",
        "    <caption>Student Data</caption>\n",
        "    <tr>\n",
        "        <th>Name</th>\n",
        "        <th>Roll No</th>\n",
        "    </tr>\n",
        "    <tr>\n",
        "        <td>Raj</td>\n",
        "        <td>1664</td>\n",
        "    </tr>\n",
        "    <tr>\n",
        "        <td>Mohan</td>\n",
        "        <td>1890</td>\n",
        "    </tr>\n",
        "</table>\n",
        "```\n",
        "\n",
        "\n",
        "2. **thead  & tbody in Tables:**\n",
        "\n",
        "  1. thead : to wrap table head\n",
        "  2. tbody : to wrap table body\n",
        "\n",
        "\n",
        "```html\n",
        "<table>\n",
        "    <thead>\n",
        "        <tr>\n",
        "            <th>Name</th>\n",
        "            <th>Roll No</th>\n",
        "        </tr>\n",
        "    </thead>\n",
        "    <tbody>\n",
        "        <tr>\n",
        "            <td>Raj</td>\n",
        "            <td>1664</td>\n",
        "        </tr>\n",
        "        <tr>\n",
        "            <td>Mohan</td>\n",
        "            <td>1890</td>\n",
        "        </tr>\n",
        "    </tbody>\n",
        "</table>\n",
        "```\n",
        "Output:\n",
        "\n",
        "| Name   | Roll No |\n",
        "|--------|---------|\n",
        "| Raj    | 1664    |\n",
        "| Mohan  | 1890    |\n",
        "\n",
        "\n"
      ],
      "metadata": {
        "id": "Wvc8RvuaztpV"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "* Colspan attribute\n",
        "\n",
        "colspan=\"n\"\n",
        "\n",
        "\n",
        "\n",
        "Used to create cells which spans over multiple columns\n"
      ],
      "metadata": {
        "id": "c51qps4o3glJ"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "#Output\n",
        "\n",
        "           Data\n",
        "    raj         1664\n",
        "    mohan       1890\n"
      ],
      "metadata": {
        "id": "zWOyg8W67c2I"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "Form in HTML\n",
        "\n",
        "Forms are used to collect data from the user\n",
        "\n",
        "Eg- sign up/login/help requests/contact me\n"
      ],
      "metadata": {
        "id": "mrg2ludI8TwM"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "<form>\n",
        "form content\n",
        "</form>"
      ],
      "metadata": {
        "id": "P6jyvN5E8g3Q"
      },
      "execution_count": null,
      "outputs": []
    },
    {
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      "source": [
        "## Forms in HTML\n",
        "\n",
        "- Forms are used to collect data from users.\n",
        "- Common use cases for forms include sign-up, login, help requests, contact forms, etc.\n",
        "\n",
        "### Basic Form Structure\n",
        "\n",
        "```html\n",
        "<form>\n",
        "  <!-- Form content goes here -->\n",
        "</form>\n",
        "```\n",
        "\n",
        "## Form Action Attribute\n",
        "\n",
        "- The `action` attribute specifies the URL or file where the form data should be submitted when the user submits the form.\n",
        "\n",
        "```html\n",
        "<form action=\"/action.php\">\n",
        "  <!-- Form content goes here -->\n",
        "</form>\n",
        "```\n",
        "\n",
        "## Form Elements\n",
        "\n",
        "### Input Fields\n",
        "\n",
        "- The `<input>` element is used for various types of input fields.\n",
        "- `type` attribute defines the type of input (e.g., text, radio, checkbox).\n",
        "- `placeholder` attribute provides a hint to users about the expected input.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<input type=\"text\" placeholder=\"Enter Name\">\n",
        "```\n",
        "\n",
        "### Labels for Input\n",
        "\n",
        "- Labels provide a description for input elements.\n",
        "- The `for` attribute in the `<label>` element should match the `id` of the associated input element.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<input type=\"radio\" value=\"class X\" name=\"class\" id=\"id1\">\n",
        "<label for=\"id1\">Class X</label>\n",
        "```\n",
        "\n",
        "### Checkbox\n",
        "\n",
        "- The `<input>` element with `type=\"checkbox\"` allows users to select one or more options.\n",
        "- Labels are used to describe checkboxes similarly to radio buttons.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<input type=\"checkbox\" value=\"class X\" name=\"class\" id=\"id1\">\n",
        "<label for=\"id1\">Class X</label>\n",
        "```\n",
        "\n",
        "### Textarea\n",
        "\n",
        "- The `<textarea>` element allows users to input multi-line text, such as comments or feedback.\n",
        "- The `name` attribute identifies the data when the form is submitted.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<textarea name=\"feedback\" id=\"feedback\" placeholder=\"Please add Feedback\"></textarea>\n",
        "```\n",
        "\n",
        "### Using IDs and Classes\n",
        "\n",
        "- The `id` attribute provides a unique identifier for an element.\n",
        "- The `class` attribute groups elements together for styling or scripting.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<div id=\"id1\" class=\"group1\"></div>\n",
        "<div id=\"id2\" class=\"group1\"></div>\n",
        "```\n",
        "\n",
        "This structured presentation of your content should help others better understand and learn about creating forms using HTML."
      ],
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      "source": [
        "\n",
        "## Select Element (Dropdown)\n",
        "\n",
        "- The `<select>` element creates a dropdown list, allowing users to select options from a list.\n",
        "\n",
        "### Basic Select Structure\n",
        "\n",
        "```html\n",
        "<select name=\"city\" id=\"city\">\n",
        "  <option value=\"Delhi\">Delhi</option>\n",
        "  <option value=\"Mumbai\">Mumbai</option>\n",
        "  <option value=\"Banglore\">Banglore</option>\n",
        "</select>\n",
        "```\n",
        "\n",
        "- `<option>` elements within the `<select>` define the available options.\n",
        "- The `value` attribute defines the value that gets sent when the form is submitted.\n",
        "- The text between the opening and closing `<option>` tags is what the user sees in the dropdown.\n",
        "\n",
        "## Iframe Tag\n",
        "\n",
        "- The `<iframe>` element is used to embed another HTML document within the current document.\n",
        "\n",
        "### Basic Iframe Structure\n",
        "\n",
        "```html\n",
        "<iframe src=\"link_to_external_page.html\" width=\"500\" height=\"300\">\n",
        "  <!-- Fallback content if iframe isn't supported -->\n",
        "</iframe>\n",
        "```\n",
        "\n",
        "- The `src` attribute specifies the URL of the external page to be embedded.\n",
        "- The `width` and `height` attributes determine the dimensions of the iframe.\n",
        "- Content within the `<iframe>` tags serves as fallback content for browsers that don't support iframes.\n",
        "\n",
        "**Note:** It seems there's a small error in your provided text. The text within the `<option>` elements should match the city names instead of repeating \"Delhi.\"\n",
        "\n",
        "These organized notes should help you understand the usage of the `<select>` element and the `<iframe>` tag more clearly."
      ],
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        "\n",
        "## Video Tag\n",
        "\n",
        "The `<video>` element is used to embed video content in HTML documents.\n",
        "\n",
        "### Basic Video Structure\n",
        "\n",
        "```html\n",
        "<video src=\"myVid.mp4\" controls width=\"640\" height=\"360\">\n",
        "  Your browser does not support the video tag.\n",
        "</video>\n",
        "```\n",
        "\n",
        "- The `src` attribute specifies the URL of the video file.\n",
        "- Content between the opening and closing `<video>` tags provides fallback text for browsers that don't support the `<video>` tag.\n",
        "\n",
        "### Attributes\n",
        "\n",
        "#### `controls`\n",
        "\n",
        "The `controls` attribute adds video controls like play, pause, volume, and progress bar.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<video src=\"myVid.mp4\" controls></video>\n",
        "```\n",
        "\n",
        "#### `width` and `height`\n",
        "\n",
        "The `width` and `height` attributes set the dimensions of the video player.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<video src=\"myVid.mp4\" width=\"800\" height=\"450\"></video>\n",
        "```\n",
        "\n",
        "#### `loop`\n",
        "\n",
        "The `loop` attribute makes the video replay automatically when it ends.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<video src=\"myVid.mp4\" loop></video>\n",
        "```\n",
        "\n",
        "#### `autoplay`\n",
        "\n",
        "The `autoplay` attribute starts playing the video automatically when the page loads.\n",
        "\n",
        "Example:\n",
        "```html\n",
        "<video src=\"myVid.mp4\" autoplay></video>\n",
        "```\n",
        "\n",
        "**Note:** It's important to consider user experience when using `autoplay` and `loop`, as they can sometimes be disruptive to visitors.\n"
      ],
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        "## HTML SEO:\n",
        "\n",
        "1. **Title Tag:**\n",
        "   - The `<title>` tag in the `<head>` section of your HTML code defines the title of your web page.\n",
        "   - It's a crucial HTML SEO element as search engines often display the title in search results.\n",
        "   - Include relevant keywords in the title to improve search engine visibility and user understanding.\n",
        "\n",
        "2. **Meta Description:**\n",
        "   - The `<meta>` tag with the `name=\"description\"` attribute provides a brief description of your web page's content.\n",
        "   - While not a direct ranking factor, a compelling meta description can influence click-through rates from search results.\n",
        "   - Use the meta description to provide a concise and enticing preview of your page's content.\n",
        "\n",
        "3. **Favicon:**\n",
        "   - A favicon is a small icon that represents your website in browser tabs, bookmarks, and history.\n",
        "   - While not a direct SEO ranking factor, a favicon contributes to your website's branding and professional appearance.\n",
        "   - A consistent favicon reinforces recognition and improves user experience.\n",
        "\n",
        "4. **URL Slug:**\n",
        "   - The URL slug is the part of the URL that comes after the domain name.\n",
        "   - A well-structured URL slug that includes relevant keywords can provide search engines with additional context about the content of the page.\n",
        "   - Use hyphens to separate words and keep the slug concise, descriptive, and user-friendly.\n",
        "\n",
        "5. **Keyword Tag (Meta Keywords):**\n",
        "   - The `<meta>` tag with the `name=\"keywords\"` attribute was historically used to specify keywords related to the page's content.\n",
        "   - However, most major search engines no longer use the keyword meta tag as a ranking factor due to abuse.\n",
        "   - Focus on incorporating relevant keywords naturally in your content rather than relying on the keyword tag.\n",
        "\n",
        "6. **Author Tag (Meta Author):**\n",
        "   - The `<meta>` tag with the `name=\"author\"` attribute allows you to specify the author or creator of the web page.\n",
        "   - While not a direct SEO ranking factor, including author information can provide credibility and transparency to your website.\n",
        "   - Particularly useful for blog posts, articles, and informational content.\n",
        "\n",
        "Remember that while these HTML elements play a role in SEO, they are just a part of the broader SEO strategy. Providing valuable and relevant content, optimizing page load speed, building high-quality backlinks, and ensuring mobile-friendliness are also crucial aspects of a comprehensive SEO approach."
      ],
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