style.css

*{
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
    font-family: 'Josefin Sans', sans-serif;
}
body{
    background: #e2e8f0;
}
.contents{
    padding: 10px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
}
.contents .color-code{
    width: 370px;
    height: 55px;
    background: #18181b;
    color: #F1f5f8;
    border-radius: 7px;
}
.contents .color-code p{
    color: #fff;
    padding: 17px;
    font-size: 25px;
}
.contents .color-code p i{
    color: #0ea5e9;
}
.button{
    padding-top: 30px;
    margin-left: 30%;
}
.button button{
    background: transparent;
    height: 40px;
    width: 150px;
    cursor: pointer;
    border-radius: 5px;
    outline: none;
    border: none;
    border: 2px solid #18181b;
    font-size: 17px;
    transition: 1s;
}
.button button:hover{
    background: #18181b;
    color: #fff;
}
.menu{
    width: 100%;
    background: #fff;
    height: 40px;
    box-shadow: 0px 0.5px 10px #374151;
}
.menu p{
    text-align: center;
    padding-top: 15px;
}
.menu p b{
    color: #0ea5e9;
}