body {
    background: #f9f6f2
}
#email {
    min-width: 190px;
}
.btn-custom {
    background: #63cbb4;
    color: #333;
    border: 1px solid #63cbb4;
    font-weight: bold;
}
.btn-custom:hover {
    background: #5fd7bd;
    color: #333;
    border: 1px solid #5fd7bd;
}
@media (min-width: 576px) {
    #email {
        width: 300px;
    }
}