style.css

*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
body{
    
    background: #314755;  /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #26a0da, #314755);  /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #26a0da, #314755); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */

    font-family: 'Times New Roman', Times, serif;
}
h1{
    text-align: center;
    transform: translate3d(0rem,8rem,5rem);
    font-size: 3rem;
    color: whitesmoke;
}
.main-container{
    text-align: center;
    background: #70e1f5;  /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, #ffd194, #70e1f5);  /* Chrome 10-25, Safari 5.1-6 */
    background: linear-gradient(to right, #ffd194, #70e1f5); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    padding: 50px;
    width: 80vw;
    transform: translate3d(7rem,10rem,5rem);
    border-radius: 15px;
}
.input-div{
    display: inline-block;
}
.input-div input{
    padding: 5px 10px;
    margin: 1rem 2rem;
    font-size: 2rem;
    font-weight: 700;
    width: 22rem;
}
.input-div label{
    font-size: 2.3rem;
}
.main-container h3{
    font-size: 2rem;
}
.main-container p{
    font-size: 1.5rem;
}
.copyright h2{
    margin-top: 2rem;
}