diff --git a/week-1/problems/0-horizontal-align/index.html b/week-1/problems/0-horizontal-align/index.html
index 7b2f62cfc..8e0a22bec 100644
--- a/week-1/problems/0-horizontal-align/index.html
+++ b/week-1/problems/0-horizontal-align/index.html
@@ -11,6 +11,7 @@
             width: 1200px;
             /* margin: 0px auto; */
             background-color: red;
+            height: 500px;
         }
 
         .content {
diff --git a/week-1/problems/1-vertical-align/index.html b/week-1/problems/1-vertical-align/index.html
index adb5ce5c7..6cc35bcee 100644
--- a/week-1/problems/1-vertical-align/index.html
+++ b/week-1/problems/1-vertical-align/index.html
@@ -23,9 +23,11 @@
         }
         .horizontal-center {
             margin: 0 auto;
+            display: flex;
+            text-align: center;
         }
     </style>
-</head>
+</head>"
 
 <body>
     <div class="container">
diff --git a/week-1/problems/2-flex-layout/index.html b/week-1/problems/2-flex-layout/index.html
index e4b966c24..df8cd50df 100644
--- a/week-1/problems/2-flex-layout/index.html
+++ b/week-1/problems/2-flex-layout/index.html
@@ -9,20 +9,25 @@
     <link rel="stylesheet" href="./index.css">
 
     <style>
+    
         .container {
-            width: 1200px;
+           max-width:  1200px;
             margin: 0 auto;
             display: flex;
+            
+           
         }
 
         .left {
             background-color: red;
             flex-grow: 1;
+            text-align: center;
         }
 
         .right {
             background-color: blue;
             flex-grow: 2;
+            text-align: center;
         }
     </style>
 </head>
diff --git a/week-1/problems/3-grid-layout/index.html b/week-1/problems/3-grid-layout/index.html
index 1f3b2f915..be7b1880a 100644
--- a/week-1/problems/3-grid-layout/index.html
+++ b/week-1/problems/3-grid-layout/index.html
@@ -7,7 +7,7 @@
     <title>Grid Layout</title>
     <style>
         .container {
-            width: 1200px;
+            max-width: 1200px;
             margin: 0 auto;
             display: grid;
             grid-template-columns: 1fr 2fr;
@@ -16,10 +16,12 @@
 
         .left {
             background-color: red;
+            text-align: center;
         }
 
         .right {
             background-color: blue;
+           text-align: center;
         }
     </style>
 </head>
diff --git a/week-1/problems/4-more-complicated-grid/index.html b/week-1/problems/4-more-complicated-grid/index.html
index 0f85ba39d..b18890ef8 100644
--- a/week-1/problems/4-more-complicated-grid/index.html
+++ b/week-1/problems/4-more-complicated-grid/index.html
@@ -8,7 +8,7 @@
     <title>Grid Layout</title>
     <style>
         .container {
-            width: 1200px;
+            max-width: 1200px;
             margin: 0 auto;
             display: grid;
             grid-template-columns: 1fr 2fr;
@@ -17,6 +17,8 @@
 
         .left {
             background-color: red;
+          
+          
         }
 
         .right {
@@ -27,9 +29,11 @@
             justify-content: center;
             align-items: center;
             height: 100%;
+          
         }
         .horizontal-center {
             margin: 0 auto;
+           text-align: center;
         }
         .grid1 {
             display: grid;
diff --git a/week-1/problems/5-vscode-bottombar/index.html b/week-1/problems/5-vscode-bottombar/index.html
index 1415669c1..ef867693b 100644
--- a/week-1/problems/5-vscode-bottombar/index.html
+++ b/week-1/problems/5-vscode-bottombar/index.html
@@ -6,6 +6,9 @@
         body {
             font-family: Arial, sans-serif;
             background-color: black;
+            display: flex;
+            justify-content: center;
+            align-items: center;
         }
         .container {
             background-color: black;
@@ -14,6 +17,10 @@
             color: white;
         }
 
+        .container p {
+            opacity: 70%;
+        }
+
         .languagePanel {
             display: grid;
             grid-template-columns: 1fr 1fr 1fr;
diff --git a/week-2/week-2-async-js/easy/counter.js b/week-2/week-2-async-js/easy/counter.js
new file mode 100644
index 000000000..1cabdf66b
--- /dev/null
+++ b/week-2/week-2-async-js/easy/counter.js
@@ -0,0 +1,11 @@
+
+
+// setInterval(()=>{console.log("after few seconds");
+// },10000)
+
+function count() {
+    console.log("after one second the fuction called againg");
+    setTimeout(count,10000)
+}
+
+count()
\ No newline at end of file
diff --git a/week-2/week-2-async-js/easy/example.txt b/week-2/week-2-async-js/easy/example.txt
new file mode 100644
index 000000000..dff62cbbf
--- /dev/null
+++ b/week-2/week-2-async-js/easy/example.txt
@@ -0,0 +1 @@
+I wrote some secrete here!
diff --git a/week-2/week-2-async-js/easy/fileWrite.js b/week-2/week-2-async-js/easy/fileWrite.js
new file mode 100644
index 000000000..b86866a85
--- /dev/null
+++ b/week-2/week-2-async-js/easy/fileWrite.js
@@ -0,0 +1,14 @@
+const fs = require('fs').promises;
+
+async function writeFile(filename, content) {
+    try {
+        await fs.writeFile(filename,content,'utf8')
+        console.log('successfully write into the file ');
+        
+    } catch (error) {
+        console.log('Error during writing file',error);
+        
+    }
+}
+
+writeFile('easy/example.txt','secret has been reveled ! ')
\ No newline at end of file
diff --git a/week-2/week-2-async-js/easy/files.js b/week-2/week-2-async-js/easy/files.js
new file mode 100644
index 000000000..9ca6cb8bc
--- /dev/null
+++ b/week-2/week-2-async-js/easy/files.js
@@ -0,0 +1,31 @@
+
+const fs = require('fs')
+
+fs.readFile('easy/example.txt', 'utf-8',(err, data)=>{
+     if (err) {
+        if (err.code == 'ENOENT') {
+            console.log("File not found",err);
+            
+        } else {
+            console.log("Error during reding",err);
+            
+        }
+        return;
+     }
+
+    console.log("File Content : ",data);
+    
+});
+
+// expensive operation
+function expensiveOperation() {
+    let sum = 0
+    for (let i = 0; i < 1e8; i++) {
+        sum += i;
+        
+    }
+    console.log("Expensive operation done");
+    
+}
+
+expensiveOperation()
\ No newline at end of file
diff --git a/week-2/week-2-async-js/medium/clearFile.js b/week-2/week-2-async-js/medium/clearFile.js
new file mode 100644
index 000000000..5620a3937
--- /dev/null
+++ b/week-2/week-2-async-js/medium/clearFile.js
@@ -0,0 +1,26 @@
+
+const fs = require('fs')
+
+
+function ClearFile(filePath) {
+    fs.readFile(filePath,'utf8', (err, data)=>{
+      if (err) {
+        console.log('Error during reading',err);
+        return;
+      }
+      const cleareddata = data.replace(/\s+/g, ' ').trim()
+
+      fs.writeFile(filePath,cleareddata,'utf8',(err)=>{
+        if (err) {
+            console.log('Error during writing the file',err);
+            return;
+        }
+        console.log('Writing file successfull');
+        
+      })
+
+    });
+}
+
+let  filePath = 'medium/example.txt'
+ ClearFile(filePath)
diff --git a/week-2/week-2-async-js/medium/clock.js b/week-2/week-2-async-js/medium/clock.js
new file mode 100644
index 000000000..e6a4755a9
--- /dev/null
+++ b/week-2/week-2-async-js/medium/clock.js
@@ -0,0 +1,21 @@
+
+
+function counter() {
+    const now = new Date()
+
+    // 24 
+    const hours24 = now.getHours().toString().padStart(2,'0')
+    const minutes = now.getMinutes().toString().padStart(2,'0');
+    const seconds = now.getSeconds().toString().padStart(2,'0')
+
+    //12 
+    const hours12 = ((now.getHours()+11)% 12 +1).toString().padStart(2, '0');
+    const ampm = (now.getHours()>=12) ? 'PM' : 'AM'
+
+    console.log(`24-hour formet:${hours24}:${minutes}:${seconds}`);
+    console.log(`12-hour farmet:${hours12}:${minutes}:${seconds}:${ampm}`);
+    
+    setTimeout(counter,1000)
+}
+
+counter()
\ No newline at end of file
diff --git a/week-2/week-2-async-js/medium/example.txt b/week-2/week-2-async-js/medium/example.txt
new file mode 100644
index 000000000..ab6082efa
--- /dev/null
+++ b/week-2/week-2-async-js/medium/example.txt
@@ -0,0 +1 @@
+hello     world    my    name   is       raman
\ No newline at end of file
diff --git a/week-2/week-2-js/easy/anagram.js b/week-2/week-2-js/easy/anagram.js
index 8184c8308..81fcc36e1 100644
--- a/week-2/week-2-js/easy/anagram.js
+++ b/week-2/week-2-js/easy/anagram.js
@@ -5,7 +5,19 @@
 */
 
 function isAnagram(str1, str2) {
+     if (str1.length !== str2.length) {
+      return false;
+     }
 
+     function sortStr(str) {
+      return str.toLowerCase().split('').sort().join()
+     }
+
+     return sortStr(str1)=== sortStr(str2);
+     
 }
 
 module.exports = isAnagram;
+
+
+
diff --git a/week-2/week-2-js/easy/expenditure-analysis.js b/week-2/week-2-js/easy/expenditure-analysis.js
index 09c401304..20bed99a8 100644
--- a/week-2/week-2-js/easy/expenditure-analysis.js
+++ b/week-2/week-2-js/easy/expenditure-analysis.js
@@ -14,7 +14,24 @@
 */
 
 function calculateTotalSpentByCategory(transactions) {
-  return [];
+
+  const allCategoryMap = {};
+
+  transactions.forEach((transaction) => {
+    const  {category, price} = transaction;
+    if (category in allCategoryMap) {
+      allCategoryMap[category] += price;
+    }else {
+      allCategoryMap[category] = price;
+    }
+
+  });
+
+  const result = [];
+  for (const category in allCategoryMap) {
+    result.push({category: category, TotalSpents : allCategoryMap[category]});
+  }
+  return result;
 }
 
 module.exports = calculateTotalSpentByCategory;
diff --git a/week-2/week-2-js/easy/findLargestElement.js b/week-2/week-2-js/easy/findLargestElement.js
index 33278de43..42c5a8518 100644
--- a/week-2/week-2-js/easy/findLargestElement.js
+++ b/week-2/week-2-js/easy/findLargestElement.js
@@ -6,7 +6,14 @@
 */
 
 function findLargestElement(numbers) {
-    
+    let largest = numbers[0];
+    for (let i = 0; i < numbers.length; i++) {
+
+       if (largest <numbers[i]) {
+          largest = numbers[i]
+       }  
+    }
+    return largest
 }
 
 module.exports = findLargestElement;
\ No newline at end of file
diff --git a/week-2/week-2-js/hard/calculator.js b/week-2/week-2-js/hard/calculator.js
index fb60142b7..b9a879e94 100644
--- a/week-2/week-2-js/hard/calculator.js
+++ b/week-2/week-2-js/hard/calculator.js
@@ -16,6 +16,60 @@
   Once you've implemented the logic, test your code by running
 */
 
-class Calculator {}
+class Calculator {
+  constructor(){
+    this.result = 0
+  }
+
+  add(number){
+    this.result += number
+  }
+
+  subtract(number){
+    this.result -= number
+  }
+
+  multiply(number){
+    this.result *= number
+  }
+
+  divide(number){
+    if (number === 0) {
+      throw new Error('Invalid Expression: Divide by Zero')
+    }
+    this.result /= number
+  }
+
+  clear (){
+    this.result = 0;
+  }
+
+  getResult(){
+    return this.result
+  }
+
+
+  calculate(inputExpression) {
+    const temp = inputExpression;
+    const cleanedExpression = temp.replace(/\s+/g,'');
+    const isValidExpression = /^[0-9+\-*/().]+$/.test(cleanedExpression);
+
+    if (!isValidExpression) {
+      throw new Error("Invalid expression.")
+    }
+
+    try {
+      this.result = eval(inputExpression)
+    } catch (error) {
+      throw new Error("Invalid expression.")
+    }
+
+   if (this.result === Infinity) {
+       throw new Error("Cannot divide a number by 0.")
+   }
+
+   return this.result
+  }
+}
 
 module.exports = Calculator;
diff --git a/week-2/week-2-js/hard/todo-list.js b/week-2/week-2-js/hard/todo-list.js
index 381d6d075..cf1fc5e2f 100644
--- a/week-2/week-2-js/hard/todo-list.js
+++ b/week-2/week-2-js/hard/todo-list.js
@@ -11,6 +11,38 @@
 */
 
 class Todo {
+    constructor () {
+      this.todos = []
+    }
+    add(todo){
+      this.todos.push(todo)
+    }
+    remove(index){
+      if (index >= 0 && index < this.todos.length) {
+        this.todos.splice(index,1)
+      }
+    }
+
+    update(index, updatedTodo){
+         if (index >= 0 && index <this.todos.length) {
+             this.todos[index] = updatedTodo
+         }
+    }
+
+    getAll(){
+      return this.todos
+    }
+
+    get(indexOfTodo){
+      if (indexOfTodo >= 0 && indexOfTodo < this.todos.length) {
+        return this.todos[indexOfTodo]
+      }
+         return null
+    }
+
+    clear(){
+      this.todos = []
+    }
 
 }
 
diff --git a/week-2/week-2-js/medium/countVowels.js b/week-2/week-2-js/medium/countVowels.js
index 49db425d6..80631f982 100644
--- a/week-2/week-2-js/medium/countVowels.js
+++ b/week-2/week-2-js/medium/countVowels.js
@@ -6,7 +6,14 @@
 */
 
 function countVowels(str) {
-    // Your code here
+    const vowels = 'aeiouAEIOU'
+    let count = 0;
+  for (const char of str) {
+     if (vowels.includes(char)) {
+       count++;
+     }
+  }
+  return count
 }
 
 module.exports = countVowels;
\ No newline at end of file
