.left-buiding-dev{padding-top:80px;width:100%;height:100%;background-image:url(../img/zuo.613db365.png);background-size:100% 100%;display:-ms-flexbox;display:flex;-ms-flex-direction:column;flex-direction:column;-ms-flex-align:center;align-items:center;-ms-flex-pack:start;justify-content:flex-start;-webkit-user-select:none;-ms-user-select:none;user-select:none;overflow-y:auto}