css opacity red code example
Example 1: css opacity background color
background: rgba(255, 255, 255, 0.25);
Example 2: background color cs rgba
#p1 {background-color:rgba(255,0,0,0.3);}
background: rgba(255, 255, 255, 0.25);
#p1 {background-color:rgba(255,0,0,0.3);}