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<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.com/w3css/4/w3.css">
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<div class="w3-sidebar w3-bar-block w3-large" style="width:25%">
  <a href="#" class="w3-bar-item w3-button">Default</a>
  <a href="#" class="w3-bar-item w3-button w3-hover-none">None</a>
  <a href="#" class="w3-bar-item w3-button w3-hover-none w3-hover-text-red">Red</a>
  <a href="#" class="w3-bar-item w3-button w3-hover-none w3-hover-text-grey">Grey</a>
  <a href="#" class="w3-bar-item w3-button w3-hover-none w3-hover-text-green">Green</a>
  <a href="#" class="w3-bar-item w3-button w3-hover-none w3-hover-text-blue">Blue</a>
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<div class="w3-container">
<p>When you mouse over the links inside a sidebar, the background color will change to grey.</p>
<p>You can turn off the hover effect with the w3-hover-none class</p>
<p>And you can use the w3-hover-text-color if you only to highlight the text color on hover.</p>
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