.slider {
    position: relative;
    overflow: hidden;
    margin: 50px auto 0 auto;
}

.slider .slidItems {
    position: relative;
    left: 0;
    margin: 0;
    padding: 0;
    list-style: none;
    transition: .5s;
    overflow: hidden;
}

.slider .slidItems li {
    position: relative;
    display: block;
    float: left;
    margin: 0;
    padding: 0;
    width: 900px;
    height: 500px;
    background-color: transparent;
    text-align: center;
    background-size: contain;
    background-position: 50% 50%;
    background-repeat: no-repeat;
    transition: .5s;
}

.slider .slidItems li a {
    display: none;
}

.slider .control_next,
.slider .control_prev {
    position: absolute;
    display: block;
    top: 45%;
    z-index: 98;
    padding: 15px 8px;
    width: 50px;
    height: 90px;
    background: #55555544;
    color: #fff;
    text-decoration: none;
    font-size: 60px;
    opacity: 0.6;
    border-radius: 5px;
    cursor: pointer;
    transition: .3s;
}

.slider .control_next:hover,
.slider .control_prev:hover {
    opacity: 1;
}

.slider .control_prev {
    left: -200px;
}

.slider .control_next {
    right: -200px;
}

.slider:hover .control_prev {
    left: 0px;
}

.slider:hover .control_next {
    right: 0px;
}

.slider-thumb {
    position: relative;
    overflow: hidden;
    margin: auto;
}

.slider-thumb .thumbnail {
    position: relative;
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: center;
    background-color: transparent;
    border: none;
}

.slider-thumb .thumbnail>li {
    display: inline-block;
    margin: 5px 2px;
    width: 90px;
    height: 55px;
    border: 2px solid transparent;
    background-size: 100%;
    background-position: 50% 50%;
    background-repeat: no-repeat;
    cursor: pointer;
    transition: .3s;
    border-radius: 4%;
}

.slider-thumb .thumbnail:hover>li {
    width: 130px;
    height: 80px;
}

.slider-thumb .thumbnail>li:hover {
    background-size: 90%;
}

.slider-thumb .thumbnail>li.selected {
    border: 2px solid rgb(149, 149, 149);
    background-size: 90%;
}