I have some images in a div called main which has the opacity set to 82%

#main {

These images however are also slightly transparant. I tried setting the opacity of the image to 100% but that didn't help. I have no idea what's causing this. The image is just a normal image with a src and alt so nothing fancy about that.

Also table (so probably also div) background colors are transparant.

Anyone who could help with this?

I found a solution for Chrome/Firefox:

#main {
    background: rgba(25, 25, 25, 0.82); 

But now on IE there's no background color at all, fully transparant.

if it it regarding opacity,then you can use

#main {
  /* IE 8 */
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";

  /* IE 5-7 */
  filter: alpha(opacity=82);

  /* Netscape */
  -moz-opacity: 0.82;

  /* Safari 1.x */
  -khtml-opacity: 0.82;

  /* Good browsers */
  opacity: 0.82;

As for background :rgba is concerned,not all browsers support it.you should declare a "fallback" color. This color will be most likely be solid (fully opaque). Not declaring a fallback means no color will be applied in browsers that don't support it. This fallback does fail in some really old browsers.

div {
   background: rgb(200, 54, 54); /* The Fallback */
   background: rgba(200, 54, 54, 0.5);