How to keep the left and right margins of divs with unfixed widths always 1rem?

Web page layout skills: Keep the left and right margins of uncertain div always 1m

In web design, it is a common problem to keep the left and right margins of a div element with an unfixed width always at 1rem. Direct usage percentages will cause margin changes due to changes in screen size, which is not an ideal solution. This article provides an effective method that does not require percentages.

Question: How to keep its left and right margins always at 1rem in a width adaptive div without being affected by the screen size?

Solution: Use rem units to set margin-left and margin-right properties. rem unit is relative to the font size of the HTML root element. As long as the font size of the root element is fixed, rem value will not change.

The following CSS code can be implemented:

 div {
  margin-left: 1rem;
  margin-right: 1rem;
  background-color: blue; /* Optional, used to facilitate viewing of effects*/
}

This code sets the left and right margins of the div element to 1rem. The margins will remain the same regardless of how the div width changes. background-color: blue; is only used for demonstration effects and can be deleted in actual applications.

Through this method, it is easy to achieve a div layout with adaptive width and fixed left and right margins.

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