Answers for "css set transperatsy"

background image opacity css

/* Two ways to make images opaque */

div {
	background-color : rgba(120, 120, 120, 0.5) 
   	/* the 0.5 is the value of opacity on a scale of 0-1 */
}

/* OR */

div {
	background-color : blue
    opacity : 50%
}

css opacity

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