feat(aio): code blocks, copy bttn, a tag hover

aio/src/styles/0-base/_typography.scss

@@ -107,7 +107,7 @@
       text-align: left;
     }
 
-    p code {
+    p > code {
       font-family: $code-font;
       font-size: 90%;
       color: $blue;
@@ -120,6 +120,9 @@
 
     .sidenav-content a {
       color: $blue;
+      &:hover {
+        color: $mediumgray;
+      }
     }
 
 //   }

aio/src/styles/1-layouts/_search-results.scss

@@ -11,12 +11,16 @@ aio-search-results {
     width: 100%;
     max-height: 40%;
     position: fixed;
-    display: flex;
     top: 0;
     left: 0;
     right: 0;
     background-color: $darkgray;
     border: 24px solid $darkgray;
+
+    @include bp(tiny) {
+        display: block;
+        max-height: 60%;
+    }
 }
 
 .search-area {
@@ -43,5 +47,6 @@ aio-search-results {
 
     @include bp(tiny) {
         width: 100%;
+        display: block;
     }
 }

aio/src/styles/2-modules/_code.scss

@@ -5,8 +5,8 @@ code-tabs md-tab-body {
     border-radius: 5px;
     color: $darkgray;
     display: block;
-    padding: 10px;
-    margin: 24px auto;
+    padding: 8px;
+    margin: 16px auto;
 }
 
 code-example header {
@@ -29,16 +29,33 @@ code-tabs.is-anti-pattern md-tab-body {
   border: 0.5px solid $anti-pattern;
 }
 
+code-tabs div .mat-tab-body-content {
+  height: auto;
+}
+
+code-tabs .mat-tab-body-wrapper md-tab-body .mat-tab-body {
+  overflow-y: hidden;
+}
+
+code-tabs mat-tab-body-content .fadeIn {
+  animation: opacity 2s ease-in;
+}
+
 aio-code pre {
     display: flex;
-    line-height: 1.5;
-
-    margin: 0px;
     padding: 0px;
     white-space: pre-wrap;
-    li {
-      line-height: 60%;
-    }
+}
+
+.copy-button {
+  top: -16px;
+  right: -16px;
+  color: $lightgray;
+  background-color: transparent;
+  border: none;
+  &:hover {
+    color: $mediumgray;
+  }
 }
 
 $blue-grey-50: #ECEFF1;