#social{position:fixed;left:0;top:120px;width:60px;height:400px;z-index:999}#social .social_item:hover{background-repeat:no-repeat;background-position:0 top;transition-duration:.6s;opacity:1}#social .social_item a{width:60px;height:60px;transition-duration:.6s;opacity:.5;display:block;text-decoration:none;background-color:#fff;color:#000;font-size:24px;text-align:center;margin:4px 0;line-height:60px}#social .social_item a:hover{background-repeat:no-repeat;background-position:0 top;transition-duration:.6s;opacity:1;color:#36737a}@media (max-width: 1020px){#social{display:none}}