chore: 更新样式

Author: ArgoZhang

src/components/BootstrapBlazor.DockView/wwwroot/css/dockview-bb.css

@@ -300,12 +300,8 @@
     z-index: -1 !important;
 }
 
-/* .dv-split-view-container.dv-vertical .dv-view:not(.visible) + .dv-view:before {
-    height: 0;
-} */
-
 .bb-dockview .dv-split-view-container.dv-vertical > .dv-view-container > .dv-view:not(:first-child):not(.visible):before,
 .bb-dockview .dv-split-view-container.dv-vertical > .dv-view-container > .dv-view:first-child:not(.visible) + .dv-view.visible:before,
 .bb-dockview .dv-split-view-container.dv-vertical > .dv-view-container > .dv-view.first-visible::before {
     height: 0;
-}
+}