docs(css): fit code blocks to content width inside content tabs

Author: bharvey88

docs/stylesheets/extra.css

@@ -134,4 +134,9 @@ article.md-typeset img {
   background-color: #8E24AA;
   -webkit-mask-image: var(--md-admonition-icon--song-purple);
   mask-image: var(--md-admonition-icon--song-purple);
-}
+}
+
+/* Fit code blocks to content width inside content tabs */
+.tabbed-content .highlight {
+  width: fit-content;
+}