#meet_us{
    height: 551px;
    position: relative;
}
.meet_us_context {
    position: absolute;
    width: 100%;
    height: 205px;
    bottom: 0;
    background-color: rgba(0,0,0,0.4);
}
.how_to_use {
    height: 280px;
    position: relative;
}
.how_to_use_item{
    border: 1px solid #E6E6E6;
    padding: 6px;
    width: 280px;
    height: 280px;
    margin: 10px;
    background: no-repeat center center;
    display: block;
}
.how_to_use_item>div{
    width: 266px;
    height: 266px;
    background-color: rgba(0,0,0,0.5);
    position: relative;
    display: none;
    text-align: center;
}
.how_to_use_item:hover>div {
    display:block;
}
.how_to_use_item>div>div {
    position: absolute;
    bottom: 20px;
    width: 100%;
    font-size: 20px;
    color: white;
}
.slick-prev{
    left: -50px;
}
.slick-next{
    right: -50px;
}