Breakpoints in Bootstrap

From the Bootstrap 5 cheat sheet · Responsive Utilities · verified Jul 2026

Breakpoints

Responsive breakpoint system

html
<!-- Breakpoint Classes -->
<!--
  xs: <576px (default, no suffix)
  sm: ≥576px
  md: ≥768px
  lg: ≥992px
  xl: ≥1200px
  xxl: ≥1400px
-->

<!-- Responsive Columns -->
<div class="col-12 col-sm-6 col-md-4 col-lg-3">
  Responsive column
</div>

<!-- Responsive Display -->
<div class="d-none d-md-block">
  Hidden on mobile, visible on desktop
</div>
💡 Mobile-first approach: styles apply to xs and up by default
⚡ Use responsive utility variants for all screen sizes
📌 Combine multiple responsive classes for complex layouts
🔥 Test on actual devices, not just browser resize
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