@media (max-width:768px){#app-header .app-header,.app-aside{display:none}#app-header .app-topbar{position:relative;display:flex;align-items:center;justify-content:center;height:var(--size-header-height);background-color:#fff}#app-header .btn-back{position:absolute;top:50%;left:4px;transform:translateY(-50%)}}