:root{--header-height:64px;--sidebar-width:250px;--top-notice-height:30px}.icon-toggle-wrap{display:flex;align-items:center;justify-content:center;position:relative;transition:all .2s}.icon-toggle-wrap.active .icon-toggle-line-1{transform:rotate(180deg)}.icon-toggle-wrap.active .icon-toggle-line-2{transform:rotate(0)}.icon-toggle-wrap .icon-toggle-line{transition:all .2s;display:block;position:absolute;left:50%;top:50%}.icon-toggle-wrap .icon-toggle-line-2{transform:rotate(90deg)}