Resetting the opacity of a child element - Maple Browser (Samsung TV App)

GibboK picture GibboK · Nov 22, 2012 · Viewed 82.4k times · Source

I have an issue with creating a transparent element which has a child element. Using this code the child element gets the opacity value from the parent element.

I need to reset/set the child's element opacity to an arbitrary value. Browser of reference is Maple Browser (for a Samsung TV Application).

 .video-caption {
        position: absolute;
        top:50px;
        width: 180px;
        height: 55px;
        background-color: #000;
        -khtml-opacity:.40; 
        -moz-opacity:.40; 
        -ms-filter:"alpha(opacity=40)";
        filter:alpha(opacity=40);
        filter: progid:DXImageTransform.Microsoft.Alpha(opacity=0.4); /*just for testing*/
        opacity:.40; 
    }
    .video-caption > p {
        color: #fff !important;
        font-size: 18px;
        -khtml-opacity:1; 
        -moz-opacity:1; 
        -ms-filter:"alpha(opacity=100)";
        filter:alpha(opacity=100);
        filter: progid:DXImageTransform.Microsoft.Alpha(opacity=1);
        opacity:1; 
    }

EDIT MARKUP

<div> <img id="videothb-1" src="https://xxxxx/splash.jpg"> <div class="video-caption"> <p>Description here</p> </div> </div>

Answer

Kyle picture Kyle · Nov 22, 2012

The problem you probably have (based on looking at your selectors) is that opacity affects all child elements of a parent:

div
{
    background: #000;
    opacity: .4;
    padding: 20px;
}

p
{
    background: #f00;
    opacity: 1;
}​

http://jsfiddle.net/Kyle_/TK8Lq/

But there is a solution! Use rgba background values and you can have transparency wherever you want :)

div
{
    background: rgba(0, 0, 0, 0.4);
    /*opacity: .4;*/
    padding: 20px;
}

p
{
    background: rgba(255, 0, 0, 1);
    /*opacity: 1;*/
}​

http://jsfiddle.net/Kyle_/TK8Lq/1/


For text, you can just use the same rgba code, but set to the color property of CSS:

color: rgba(255, 255, 255, 1);

But you must use rgba on everything for this to work, you have to remove the opacity for all parent elements.

http://jsfiddle.net/Kyle_/TK8Lq/2/