add opacity to image code example

Example 1: css opacity example

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

Example 2: 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%
}

Example 3: image opacity in html

img {
  opacity: 0.5;
}

Example 4: change opacity of png

convert  test.png -threshold 0% -alpha off  black_threshold.png

Example 5: change opacity of png

convert  test.png -threshold 80% -alpha off  black_threshold.png

Example 6: 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 ...