.column_skin .layui-layer-setwin a:after{
    display: inline-block;
    content: '+';
    transform: rotate(45deg);
    width: 28px;
    height: 28px;
    font-size: 32px;
    font-weight: 300;
    margin-top: -5px;
}
@media (max-width: 1367px) {
    .column_skin {
        top: 50% !important;
    }
}