Improve snippet

docs/_sass/example.sass

@@ -42,10 +42,6 @@
     margin-top: -1.5rem
     &:not(:last-child)
       margin-bottom: 1.5rem
-  & + .bd-highlight-clipped
-    margin-top: -1.5rem
-    &:not(:last-child)
-      margin-bottom: 1.5rem
 
 // Snippet
 .bd-snippet
@@ -218,28 +214,23 @@ $structure-invert: $danger-invert
   .bd-show
     +overlay
     align-items: center
-    background-color: rgba(#000, 0.9)
-    background-image: linear-gradient(rgba(#000, 0), rgba(#000, 0) 90%, rgba(#000, 1))
+    background-color: rgba($background, 0.7)
     border: none
-    color: $white
+    color: rgba(#000, 0.5)
     cursor: pointer
     display: none
-    font-size: $size-6
+    font-size: $size-small
     justify-content: center
-    opacity: 0.7
     width: 100%
     strong
       color: currentColor
       font-weight: $weight-semibold
     &:hover
-      opacity: 0.8
-  .highlight.bd-is-clipped
-    height: 4em
-    overflow: hidden
+      background-color: rgba($yellow, 0.8)
+      color: rgba(#000, 0.7)
+  +tablet
     pre
-        overflow: hidden
-    .bd-show
-      display: flex
+      white-space: pre-wrap
 
 +tablet
   .section:not(.is-fullwidth) > .bd-example:not(.is-fullwidth)