Element: clientTop property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

The clientTop read-only property of the Element interface returns the width of the top border of an element in pixels.

All that lies between the offsetTop and clientTop is the element's border. This is because the offsetTop indicates the location of the top of the border (not the margin) while the client area starts immediately below the border, including padding. Therefore, the clientTop value is always equal to the border-top-width, rounded to integer. For example, if the computed border-top-width is zero, then clientTop is also zero.

<div id="container">
  <div id="contained">
    <p>
      Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
      tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
      veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
      commodo consequat.
    </p>
  </div>
</div>

CSS

css

#container {
  margin: 3rem;
  background-color: rgb(255 255 204);
  border: 4px dashed black;
}

#contained {
  margin: 1rem;
  border-top: 24px black solid;
  padding: 0px 28px;
  overflow: auto;
  background-color: white;
}