body{
        display:flex; 
        height: 100vh;
        background: linear-gradient(-45deg, #ef7552,#73e7c3,#23a6d5, #23d5ab);
        background-size: 300% 300%;
        justify-content:center;
        align-items:center;
        animation: gradient 15s ease infinite;
    }
    @media screen and (max-width: 400px) {
        body {
        }
        .register{
        
        }
    }
    @keyframes gradient{
    0%{
        background-position: 0% 50%;
    }
    50%{
        background-position: 100% 50%;
    }
    100%{
        background-position: 0% 50%;
    }
    } 
    .form-control{
        background-color:#ffffffc2;
    }

    .register{
        /* From https://css.glass */
        background: rgba(255, 255, 255, 0.57);
        border-radius: 16px;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        backdrop-filter: blur(5.3px);
        -webkit-backdrop-filter: blur(5.3px);
        padding-left: 20px;
        padding-right: 20px;
        margin: 30%;
        padding-bottom: 15px;
    }
    .loginwith{
        text-align-last: center;
        margin-bottom: 20px;
    }
    .loginwith img{ 
        margin: 10px;
    }

/* Extra small devices (phones, 600px and down) */
@media only screen and (max-width: 600px) {
    .register{
        margin: 0 auto;
        height: -webkit-fill-available;
    }
    .form-control{
        height: 30px
    }
    input[type=button].btn-block, input[type=reset].btn-block, input[type=submit].btn-block{
        height: 35px;
    }
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (min-width: 768px) {
    .register{
        margin: 0 auto;
    }
}