.design-left{z-index:99;background:#fff;height:77%}.design-left,.design-middle{position:fixed;overflow-x:hidden;overflow-y:auto}.design-middle{z-index:2;background:#f8f8f8;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;width:100%;height:100%;padding-right:400px}.design-right{position:fixed;z-index:99;right:0;overflow-x:hidden;overflow-y:auto;background:#fff;height:77%}.design-bar{position:fixed;z-index:99;bottom:0;background:rgba(44,49,60,.8);width:100%;height:50px;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;-webkit-box-align:Center;-ms-flex-align:Center;align-items:Center}