style:refine tabsview css

src/styles/index.scss

@@ -4,6 +4,7 @@
 @import './sidebar.scss';
 
 body {
+  height: 100%;
   -moz-osx-font-smoothing: grayscale;
   -webkit-font-smoothing: antialiased;
   text-rendering: optimizeLegibility;
@@ -15,9 +16,14 @@ label {
 }
 
 html {
+  height: 100%;
   box-sizing: border-box;
 }
 
+#app{
+  height: 100%;
+}
+
 *,
 *:before,
 *:after {