Dòng code đổi màu khi rê chuột lên
<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 24.0.2, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 90 86"style="enable-background:new 0 0 90 86;"xml:space="preserve">
<style type="text/css">
.st0{fill:#ccc;}
.st0:hover{fill:#0ff;}
</style>
<ellipse class="st0" cx="46" cy="44.5" rx="37" ry="34.5"/>
</svg>
