Refactor doc tabview

src/assets/styles/app/_content.scss

@@ -28,7 +28,7 @@
                     text-decoration: none;
                     color: $linkColor;
                     font-weight: 600;
-    
+
                     &:hover {
                         text-decoration: underline;
                     }
@@ -117,7 +117,7 @@
                             &:focus {
                                 outline: 0 none;
                                 transition: background-color .2s, box-shadow .2s;
-                                box-shadow: 0 0 0 0.2em $focusBorderColor;
+                                box-shadow: inset 0 0 0 0.2em $focusBorderColor;
                             }
 
                             &:hover {
@@ -220,7 +220,7 @@
         box-shadow: 0 2px 1px -1px rgba(0,0,0,.2), 0 1px 1px 0 rgba(0,0,0,.14), 0 1px 3px 0 rgba(0,0,0,.12);
         border-radius: 4px;
         margin-bottom: 2rem;
-        
+
         .card-header {
             display: flex;
             align-items: center;
@@ -240,4 +240,4 @@
     .box-stretched {
         height: 100%;
     }
-}
+}