style.css

@import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
body{
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #8EC5FC;
    background-image: linear-gradient(62deg, #8EC5FC 0%, #E0C3FC 100%);

}
.main-container{
    width: 600px;
    background: white;
    max-width: 100%;
    box-shadow: rgba(50, 50, 93, 0.25) 0px 50px 100px -20px, rgba(0, 0, 0, 0.3) 0px 30px 60px -30px;
}
.header-container{
    font-size: 1.3rem;
    padding: 1rem;
}
ul{
    list-style: none;
}
li{
    margin: 15px 50px;

}
label{
    font-size: 1.3rem;
}
#submit-btn{
    width: 100%;
    padding: 1rem;
    font-size: 1.5rem;
    border: none;
    background: #3498db;
    color: white;
    display: block;
}
#submit-btn:hover{
    width: 100%;
    padding: 1rem;
    font-size: 1.5rem;
    border: none;
    background: #2980b9;
    color: white;
    display: block;
}