The CSS Unit You’re Not Using: VMAX Explained 📐 [ css ] - KruXoR

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The CSS Unit You’re Not Using: VMAX Explained 📐

Posted in css

1:54 am, January 30, 2026

The CSS Unit You’re Not Using: VMAX Explained 📐

Ever heard of VMAX? While everyone uses VW and VH, VMAX is the secret to keeping your elements scaled perfectly to the largest side of the screen.

In this quick demo, we're comparing how a div behaves when we switch from VH to VMAX. You’ll notice that while VH only cares about height, VMAX looks at both width and height and picks the winner. This is a game-changer for maintaining layout consistency across portrait and landscape modes!

What exactly is VMAX?

1vmax is equal to 1% of the larger dimension of the viewport (either the width or the height).
If the width is 1000px and the height is 800px, 1vmax will be 10px (based on the width).
If you rotate your phone to portrait, it automatically switches its calculation to the new "max" dimension.

Why use it?

It prevents your elements from shrinking too small when one dimension is tiny, ensuring your design stays readable and impactful no matter how the browser is resized.

HTML

<div class="demo-div"></div>

CSS

.demo-div {
  width: 10vmax; /* Always 10% of the biggest side! */
  height:10vmax;
  background: linear-gradient(to right, #00b09b, #96c93d);
}

Posted in css

1:54 am, January 30, 2026

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