Opacity

Control the opacity of elements.

The opacity property sets the opacity level for an element. The opacity level describes the transparency level, where 1 is not transparent at all, .5 is 50% visible, and 0 is completely transparent.

Design
HTML

100%

75%

50%

25%

<!-- Opacity -->
 <div class="opacity-100">...</div>
 <div class="opacity-75">...</div>
 <div class="opacity-50">...</div>
 <div class="opacity-25">...</div>