The html element is failing to adjust its height to match the entirety of the browser window, even when set to

After inspecting my HTML element, I noticed that it isn't occupying 100% of the browser view, even though I have set the height to 100% in my CSS file. I tested it in both Chrome and Firefox, and the issue persists. I suspect that the browser is adding display: block to my HTML element - could this be causing the problem?

Answer №1

The element does not occupy 100% of the browser view.

If you specifically want the element to fill the height of the 'browser view', also known as the viewport, use this CSS:

#element {
  height: 100vh;
}

This will make the element take up 100% of the viewport's height. You can refer to this page for information on browser support.

Answer №2

It seems like you may be missing the height: 100% in both your html and body tags. Make sure to include them in your CSS file.

html, body {
    height: 100%;
}

Keep in mind that the height percentage is relative to the element's parent. If the parent element is only 30% of the page, the child element will also be 30%, so adjust accordingly.

Answer №3

Ensure that both your HTML and Body elements are set to 100% in your CSS;

body, html {
    height: 100%
  }

Answer №4

One common reason for encountering this issue is often due to neglecting to set height: 100% for both html and body elements.

It's important to remember that percentage is a relative unit that requires a parent element with a declared absolute height/width in order to work properly. Additionally, if the parent element has height/width specified in percentage, that calculated value will be used as the basis for determining the percentage for its children.

When setting the height as 100%, be mindful of the box-sizing property, as adding margins and paddings to the element may cause it to exceed the 100% height of its parent.

For example, if your markup looks like this...

<html>
    <body>
        <div class="my-element"></div>
    </body>
</html>

If you still prefer to use percentage as a length value, you can do so by:

html,
body, 
.my-element {
    height: 100%;
}

Alternatively, consider using the vh length unit for a better approach:

.my-element {
    height: 100vh;
}

Learn more about the vh length unit here.

For information on browser compatibility, visit http://caniuse.com/#feat=viewport-units.

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