How can I rearrange columns in a CSS Grid Layout for mobile responsiveness?

Re-ordering Columns in a CSS Grid Layout

In CSS Grid Layout, there are various techniques for modifying the order of columns to achieve specific layouts. This question explores the possibility of rearranging columns for mobile layouts, such as moving a column to the bottom while maintaining the desired column order on desktop layouts.

Solution Options:

1. grid-template-areas: This property allows you to define named areas within the grid and then assign grid items to those areas. By using named areas, you can control the layout and ordering of items without relying on their initial order in the source code.
2. Line-based placement: With line-based placement, you can use the grid-column-* properties to specify the column in which an item should be placed. By assigning grid items to specific columns, you can control their order and positions within the grid.
3. order property: The order property allows you to define the order in which grid items appear, regardless of their initial ordering in the source code. By specifying order values, you can determine the visual sequence of items within the grid.
4. dense function of grid-auto-flow: The dense function of grid-auto-flow optimizes grid layout by automatically adjusting the placement of grid items to fill available space as efficiently as possible. It can be used to achieve the mobile layout in the question, where items are moved to new lines as necessary to accommodate the smaller screen size.

Sample Code:

The following example demonstrates the use of the grid-auto-flow: dense function to achieve the mobile layout described in the question:

<code class="css">.container {
  display: grid;
  grid-template-columns: 15% 1fr 25%;
  grid-auto-flow: dense; /* optimizes item placement */
}</code>

With this code, the grid items will automatically be rearranged to fill the available space efficiently, resulting in the desired mobile layout.

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