*{
    margin: 0;
    padding: 0;
    box-sizing: border-box
}
.show{
    width: 400px;
    height: 400px;
}
.small-img{
    width: 350px;
    height: 70px;
    margin-top: 10px;
    position: relative;
    left: 25px;
}

.small-container{
    width: 310px;
    height: 70px;
    overflow: hidden;
    position: absolute;
    left: 0;
    right: 0;
    margin: 0 auto;
}
.small-container div{
    width: 800%;
    position: relative;
}

.small-container .show-small-img{
    width: 70px;
    height: 70px;
    margin-right: 6px;
    cursor: pointer;
    float: left;
}
.small-container .show-small-img:last-of-type{
    margin-right: 0;
}