I am trying to achieve a specific layout where I have a nested div structure. The parent div has a width set in percentage (80%) and I want the child div to be slightly narrower by 30px. Can anyone provide guidance on how I can accomplish this? Do I need to utilize JavaScript for this task? Your assistance is greatly appreciated.
Using margins:
<div style="width:80%;">
<div style="margin-left:15px;margin-right:15px;"> inner </div>
</div>
@dystroy provided a solid answer, but there's room for more dynamic customization.
Here's another approach: utilize CSS variables.
To implement this method, follow these steps:
#parent-div
{
var-width: 100px; /* Feel free to adjust as needed */
//Keep in mind that despite being named var-width, the browser will interpret it as simply width and apply the `var-` prefix as an instruction
//to enable variable-based calculations.
}
#child-div
{
width: calc(var(width) - 30);
}
This code instructs the CSS to calculate the child element's width dynamically.
For further information on this technique, visit this resource.
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