/*Стили для слайдера сертификатов*/
.slider__bckgrnd {
    position: fixed;
    top: 0; left: 0; bottom: 0; right: 0;
    width: 100%;
    height: 100vh;
    z-index: -1;
}
.itcss {
    max-width: 650px;
    margin: auto;
    position: fixed;
    top: 0; left: 0; bottom: 0; right: 0;
    overflow: visible;
    flex-direction: column;
    justify-content: center;
}
.itcss__wrapper {
    border: #5D5D5E;
    box-shadow: 0 0 40px #1d1d1d;
    z-index: 5;
}
.itcss img {
    max-width: 100%;
    height: auto;
    display: block;
}

.itcss__control {
    background-color: #f00;
    box-shadow: 0 0 40px #555;
    z-index: 6;
}
.slider__thumbnails:hover {
    cursor: zoom-in;
}