Fixes image size in docs (#3404)

* added color to close and rollup buttons when hover

* fixes improper image size in docs

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Co-authored-by: ajeet <109718740+ajeetcode@users.noreply.github.com>

documentation/index.html

@@ -270,7 +270,7 @@ <h2 id="a-quick-tour-of-selected-blocks">A quick tour of selected blocks</h2>
 <h2 id="widget-palette">Widget Palette</h2>
 <p>Music Blocks has various Widgets that can be used within Music Blocks
 to enhance your experience. The <em>Pitch-time matrix</em> is described here.</p>
-<p><img src="matrix_block.svg" alt="matrix_block.svg" title="The Pitch-Time Matrix" width="100%"></p>
+<p><img src="matrix_block.svg" alt="matrix_block.svg" title="The Pitch-Time Matrix"></p>
 <p>Many of the blocks on this palette are used to create a matrix of
 &quot;pitch&quot; and &quot;note value&quot;. The matrix is a convenient and intuitive way
 for generating short musical gestures, which can be regenerated as a