Opacity with Sass

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It is OK to use opacity property for modern browsers but not for IE. So provide a filter fallback for IE8. You can set opacity from 0 (not visible) to 1 (completely visible) and filter percentage from 0 to 100. It means you can simply multiply the value of opacity by 100 for IE filter.

Define @mixin

@mixin opacity($opacity) {
     opacity: $opacity;
     $opacityIE: $opacity * 100;
     filter: alpha(opacity=$opacityIE);

Usage with @include

.box {
     @include opacity(0.5);


.box {
  opacity: 0.5;
  filter: alpha(opacity=50);
Provided by: Web Creator Box
Posted in Sass


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