.card-header {
    border: none;
    color: #fff;
    overflow: hidden;
}

.card-header:hover {
    text-decoration: none;
    color: #fff;
}

.card-header:before {
    position: absolute;
    content: '';
    display: inline-block;
    top: -180px;
    left: 0;
    width: 30px;
    height: 100%;
    background-color: #fff;
    animation: shiny-btn1 3s ease-in-out infinite;
}

.dark-mode .card-header:before {
    background-color: #343a40 !important;
}



.card-header:active{
    box-shadow:  4px 4px 6px 0 rgba(255,255,255,.3),
            -4px -4px 6px 0 rgba(116, 125, 136, .2),
    inset -4px -4px 6px 0 rgba(255,255,255,.2),
    inset 4px 4px 6px 0 rgba(0, 0, 0, .2);
}

@-webkit-keyframes shiny-btn1 {
    0% { -webkit-transform: scale(0) rotate(45deg); opacity: 0; }
    80% { -webkit-transform: scale(0) rotate(45deg); opacity: 0.5; }
    81% { -webkit-transform: scale(4) rotate(45deg); opacity: 1; }
    100% { -webkit-transform: scale(50) rotate(45deg); opacity: 0; }
}

.login-cover {
    background-image: url('{{ asset('img/s-1.jpg') }}');
    min-height: 500px;
    background-repeat: no-repeat;
    background-size: cover;
}