只需添加 overflow-x：auto

just add overflow-x:auto in

.photocontainer{
    position: relative;
    display:inline-block;
    float:left;
    top:110px;
    max-height:calc(100% - 155px);
    max-height:-webkit-calc(100% - 155px);
    max-height:-moz-calc(100% - 155px);
    max-height:-ms-calc(100% - 155px);
    max-height:-o-calc(100% - 155px);
    height:auto;
    margin:0px;
    padding:0px;
    left:0px;
    bottom:0px;
    white-space: nowrap;
    overflow-x:auto;
}

我检查了您的现场版本 检查元素及其工作完美

I checked your live version in inspect element and its working perfectly