opacity in rgb code example
Example 1: background color cs rgba
#p1 {background-color:rgba(255,0,0,0.3);}
Example 2: rgba green color
rgb(0,128,0) /*green*/ Hex #008000
#p1 {background-color:rgba(255,0,0,0.3);}
rgb(0,128,0) /*green*/ Hex #008000