.lowcode-left-area-nav { width: 50px; height: 100%; background-color: $card-background; border-right: 2px solid $color-line1-1; position: relative; .top-area { position: absolute; top: 0; width: 100%; padding: 12px 0; background-color: $card-background; max-height: 100%; } .bottom-area { position: absolute; bottom: 0; width: 100%; padding: 12px 0; background-color: $card-background; max-height: calc(100% - 20px); } }