Use a specific col-* to prevent that vertical stacking. Specific col-* class in your HTML markup. Key points on Responsive Design using the Grid:Ĭolumns will stack vertically (and become full-width) at the smaller screen widths unless you use a The sidebar will stack on top at the sm breakpoint of 576px: The right column will automatically grow to fill the width. Here’s an example of combining the classic defined-width columns, Remember, you can switch out sm for whatever breakpoint (md,lg,xl) is needed.Ģ columns, left sidebar & right. In this example, the `cols` remain horizontal until the sm breakpoint of 576px, and then stack vertically: The `cols` remain horizontal at all widths, and don’t stack vertically because the xs breakpoint is the default:ģ equal-width columns (responsive). Take a look at a few auto-layout Grid examples…ģ equal-width columns. But, don’t forget, the 12-unit columns can be mixed-in as needed. The auto-layout columns are perfect for any layout scenarios where equal-width columns are required. Because of their simplicity, I prefer them over the classic 12-unit columns. The Bootstrap 4 auto-layout columns also work responsively. For example:įor a different column width on a larger tier, use the appropriate larger breakpoint to override the smaller breakpoint.įor example, 3 columns wide on sm, and 4 columns wide on md-and-up: For the same column width on all tiers, just set the width for the smallest tier that’s desired. Therefore, col-sm-6 really means 50% width on small-and-up. Or, in reverse… xl > overrides lg > overrides md > overrides sm > overrides (xs) Larger breakpoints, override Smaller breakpoints. Since (xs) is the default breakpoint, the col-12 is implied. Since I didn’t specify a default Column width, the 50% width was only applied on 768px and wider for the sm breakpoint. This is because (xs) is the default or implied breakpoint. On less than 768px, the 2 columns become 100% width and stack vertically: The col-sm-6 means use 6 of 12 columns wide (50%), on a typical small device width (greater than or equal to 768 px): They enable you to control Column behavior at different screen widths.įor example: here are 2 columns, each 50% width: So instead ofīootstrap uses CSS media queries to establish these Responsive Breakpoints. Why did I put (xs) in parenthesis, and not the other breakpoints? Since xs (extra-small) is the defaultīreakpoint, the -xs infix that was used for Bootstrap 3.x is longer used in Bootstrap 4.x.
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