Transparent CSS background color

Solution 1:

now you can use rgba in CSS properties like this:

.class {
    background: rgba(0,0,0,0.5);
}

0.5 is the transparency, change the values according to your design.

Live demo http://jsfiddle.net/EeAaB/

more info http://css-tricks.com/rgba-browser-support/

Solution 2:

Keep these three options in mind (you want #3):

1) Whole element is transparent:

visibility: hidden;

2) Whole element is somewhat transparent:

opacity: 0.0 - 1.0;

3) Just the background of the element is transparent:

background-color: transparent;

Solution 3:

yes, thats possible. just use the rgba-syntax for your background-color.

    .menue {
      background-color: rgba(255, 0, 0, 0.5); //semi-transparent red
    }