static/scss/bootstrap-4.0.0-alpha.6/docs/utilities/sizing.md

   1 ---
   2 layout: docs
   3 title: Sizing
   4 group: utilities
   5 ---
   6
   7 Easily make an element as wide or as tall (relative to its parent) with our width and height utilities. Includes support for `25%`, `50%`, `75%`, and `100%` by default.
   8
   9 Width and height utilities are generated from the `$sizes` Sass map in `_variables.scss`. Modify those values as you need to generate different utilities here.
  10
  11 {% example html %}
  12 <div class="w-25 p-3" style="background-color: #eee;">Width 25%</div>
  13 <div class="w-50 p-3" style="background-color: #eee;">Width 50%</div>
  14 <div class="w-75 p-3" style="background-color: #eee;">Width 75%</div>
  15 <div class="w-100 p-3" style="background-color: #eee;">Width 100%</div>
  16 {% endexample %}
  17
  18 {% example html %}
  19 <div style="height: 100px; background-color: rgba(255,0,0,0.1);">
  20   <div class="h-25 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 25%</div>
  21   <div class="h-50 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 50%</div>
  22   <div class="h-75 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 75%</div>
  23   <div class="h-100 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 100%</div>
  24 </div>
  25 {% endexample %}
  26
  27 You can also use `max-width: 100%;` and `max-height: 100%;` utilities as needed.
  28
  29 {% example html %}
  30 <img class="mw-100" data-src="holder.js/1000px100?text=Max-width%20%3D%20100%25" alt="Max-width 100%">
  31 {% endexample %}
  32
  33 {% example html %}
  34 <div style="height: 100px; background-color: rgba(255,0,0,0.1);">
  35   <div class="mh-100" style="width: 100px; height: 200px; background-color: rgba(0,0,255,0.1);">Max-height 100%</div>
  36 </div>
  37 {% endexample %}