#gc{
    margin:auto;
    height: 80vh;
    width: 40%;
    padding: 40px 0;

}

body {
    text-align: center;
}

@media(max-width: 767px) {
    #gc{
    margin:auto;
    height: 80vh;
    width: 90%;
    padding: 20px 0;

}

}