The task is to switch a column of Bootstrap 4 grid layout to row on small screen sizes.
<element class="col-md-4 col-sm-6 ...">...</element>
Approach: To solve the given task we have to use Bootstrap 4’s grid layout. The grid layout divides the entire visible row into 12 equally sized columns. Once we are in a row we can easily specify the arrangement of rows and columns based on the screen size. This is done by adding the class “col-SIZE-SIZE_TO_OCCUPPY”.
For example, .col-md-4 which means take 4 columns on the medium-sized screens. If we stack multiple column classes on a single element we can define how we want the layout to look like on other screens and change the columns to rows as we want. For example, .col-md-4 .col-sm-6 means that the given element will occupy 4 columns in a row for medium screens (essentially allowing for more elements in a single row) while on smaller screens it will occupy 6 columns. If the sum of columns for any given row exceeds 12, it will be automatically shifted to the next row.
Available classes and screens:
|Extra small||col-SIZE||< 576px|
|Extra Large||col-xl-SIZE||≥ 1200px|
NOTE: SIZE in the above table is to be replaced by the desired column size of 0 to 12 inclusive.
Example 1: In this example we will make a simple three-column row and shift one column to a new row on smaller screens.
Output: As the display size gets smaller than 576px (SM) the column is automatically aligned to the next row.
Example 2: In this example we will make a nested layout of grids where we will show the data column-wise on medium screens and switch to a single row as the screen size goes smaller.
Output: The higher level row shrinks to a column as the screen size decreases but the nested grid layout has the opposite effect as defined. (they go from column to row)