.trans{transition:transform .2s ease}.sider-trigger-a{padding:4px;width:40px;height:40px;display:inline-block;text-align:center;color:#5c6b77;margin-top:7px}.sider-trigger-a i{transition:transform .2s ease;vertical-align:top}.sider-trigger-a.collapsed i{transform:rotate(90deg);transition:transform .2s ease}