Ensure that the class is consistently assigned with identical col-md-* and col-lg-* properties across all instances

Bootstrap 5.2 is my framework of choice for targeting github pages, and here is a snippet of my code:

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Web project</title>
    <link rel="stylesheet" href="bootstrap.min.css">
    <style>
        .left-column {
            background-color: red;
            /* Other things */
        }
        .right-column {
            background-color: lightblue;
            /* Other things */
        }
    </style>
</head>

<body>
<script src="bootstrap.min.js"></script>
<div class="container-fluid">
    <div class="row">
        <div class="left-column col-lg-3 col-md-6">AAA</div>
        <div class="right-column col-lg-9 col-md-6">BBB</div>
    </div>
    <div class="row">
        <div class="left-column col-lg-3 col-md-6">CCC</div>
        <div class="right-column col-lg-9 col-md-6">DDD</div>
    </div>
</div>
</body>
</html>

I always include col-lg-3 col-md-6 for every left column, and col-lg-9 col-md-6 for every right column. Is there a way to streamline this process for the .left-column declaration without repetition?

Question: I want .left-column to utilize col-lg-3 and col-md-6, but I'm not sure how to achieve this ideally.

One potential solution could involve using @media queries to adjust the width based on min-width/max-width, but this approach:

  1. Involves duplicating Bootstrap's functionality
  2. Might lead to messy CSS code due to redundant or split left-column declarations

This query is tied to: Can a CSS class inherit one or more other classes?. The suggested solution involves LESS, which is not a viable option for me. While older responses commonly state that it's impossible, a potential workaround is outlined here: , but it only works for pre-existing elements.

Answer №1

To enhance your Bootstrap 5 experience, it is recommended to utilize SCSS. Check out this resource for guidance: For instance:

// File: my-bootstrap-and-styles.scss

// Customize your styles
$primary : #FEBC35;

// Import bootstrap.scss
@import "../node_modules/bootstrap/scss/bootstrap";  

// Add your own custom code here
.my-primary-div {
  background: $primary;
  border: 1px solid black;
}

// Make use of bootstrap variables and mixins
@include media-breakpoint-down(md) {
    .my-class {
        overflow-y: auto;
    }
}

Afterwards, simply:

.left-column {
    background-color: red;
    @extend .col-lg-3;
    @extend .col-md-6;
    /* Additional styling */
}

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