.is-error {
    border: none;
    border-bottom: 2px solid red !important;
}

.demo-modal {
    background-color: #FFF;
    box-shadow: 0 11px 15px -7px rgba(0, 0, 0, 0.2), 0 24px 38px 3px rgba(0, 0, 0, 0.14), 0 9px 46px 8px rgba(0, 0, 0, 0.12);
    padding: 24px;
    width: 60%;
    position: relative;
    display: none;
}

.demo-close {
    display: block;
    position: absolute;
    top: -35px;
    right: 0;
    z-index: 10000;
    outline: none;
    font-size: 30px;
    line-height: 30px;
    transition: transform .3s ease-in-out;
    color: #FFF;
}

.fa-close:before, .fa-remove:before, .fa-times:before {
    content: "\f00d";
}