how to do opacity all the background css code example

Example 1: css opacity

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

Example 2: background color with opacity

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

Example 3: image opacity in html

img {
  opacity: 0.5;
}

Example 4: set opacity of background image

The following example sets the opacity for the background color and not the text: 100% opacity. 60% opacity. 30% opacity. 10% opacity. You learned from our ...