html {
/*    background: url(/images/kneu_login_crop.jpg) no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
    height: 100%;*/
}

body {
    background-color: rgba(255, 255, 255, 0.7);
    min-height: 85vh;
    position: relative;
    /*height: 100%;*/
}

.print_item:hover {
    /*font-weight: bolder;*/
    color: darkgreen;
    box-shadow: 0 0 15px rgba(45,55,72,0.7); /* Параметры тени */
}

.cover {
    width: 100%;
/*    max-height: 50vh;
    min-height: 15vw;*/
}

.prints_link {
    text-decoration: none;
    color: #2d3748;
}
.prints_link:hover {
    text-decoration: none;
    color: #000000;
}

.links {
    text-decoration: none;
    color: #2d3748;
}
.links:hover {
    text-decoration: none;
    color: #00655b;
}

/* Footer */
.kneu_link {
    color: #2d3748;
    background: rgb(45, 55, 72, 0.15);
    width: 100%;
    position: absolute;
    top: 100%;
}
.kneu_design, .kneu_design a {
    text-decoration: none;
    color: #2d3748;
    font-size: 11px;
}
#back-to-top {
    background-color: #000;
    background-color: rgba(0,0,0,.25);
    border-radius: 5px;
    box-shadow: 0 0 1px #fff;
    color: #fff;
    display: none;
    padding: 5px 12px;
    position: fixed;
    right: 3px;
    text-align: center;
    text-decoration: none;
    text-transform: uppercase;
    top: 91%;
    transition: all 0.3s ease 0s;
    font-size: 1.1em;
    cursor: pointer;
}
#back-to-top:hover .bi {
    color: #009688;
}

/* Langs */
.lag_to_change {
    opacity: 0.2;
}
.lag_to_change:hover {
    opacity: 0.5;
}