opacity code example

Example 1: trasition opacity

.fade {
   opacity: 1;
   transition: opacity .25s ease-in-out;
   -moz-transition: opacity .25s ease-in-out;
   -webkit-transition: opacity .25s ease-in-out;
   }

   .fade:hover {
      opacity: 0.5;
      }

Example 2: css opacity background color

background: rgba(255, 255, 255, 0.25);

Example 3: css opacity example

.opacity30 {
  opacity: 0.3;
  filter: alpha(opacity=30); /* For IE8 and earlier */
}

Example 4: css opacity

.div{
  opacity: 0.8; /* 1 means fully visible, 0 means invisible */
}

Example 5: background color with opacity

h1 {background-color:rgba(255,0,0,0.3);}

Example 6: opacity css

div {
  background-color: yellow;
}

.light {
  opacity: 0.2; /* Der Text kann kaum über dem Hintergrund gelesen werden */
}

.medium {
  opacity: 0.5; /* Der Text ist besser über dem Hintergrund lesbar */
}

.heavy {
  opacity: 0.9; /* Der Text ist sehr deutlich über dem Hintergrund lesbar */
}