.column-switch {display:none; width: 30px;height: 48px;float: right;background: url(skin/images/menu-dot-white.png) no-repeat center;}
@media screen and (max-width: 767px) {
    .column-switch {display:block;}
    .pageNav ul.pageNav-ul { display: none;}
}.pageR_article .art-share { margin-top: 50px;}

@media (min-width: 1000px) {
    .pageR_article { min-height: 550px;}
}