style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.outer-box{
    height: 100vh;
    width: 100vw;
    background-color: #c9d7ed;;
}
.inner-box{
    width: 400px;
    margin : 0 auto;
    position: relative;
    top: 40%;
    transform: translateY(-50%);
    padding: 20px 40px;
    background-color: rgb(255, 255, 255);
    border-radius: 8px;
}

.signup-header h1{
    font-size: 2.5rem;
    color : #212121
}

.signup-header p{
    font-size: 0.95rem;
    color: #555;
    margin-top: 5px;
}

.signup-body{
    margin: 20px 0;
}

.signup-body p{
    margin: 10px 0;
}

.signup-body p label{
    display: block;
    font-weight: bold;
}

.signup-body p input{
    width: 100%;
    padding: 10px;
    border: 2px solid #cccc;
    border-radius: 4px;
    font-size: 1rem;
    margin-top: 4px;
}

.signup-body p input[type="submit"]{
    background-color: #1b7bf1;
    border : none;
    color : white;
    cursor: pointer;
}
.signup-body p input[type="submit"]:hover{
    background-color: #559bf6;
}

.signup-footer p{
    color: #555;
    text-align: center;
}

.signup-footer p a{
    color : #3498db;
}