html - Cut out shape (triangle) from div and show background behind -


i trying cut triangle out of div , show background behind div... not have thought possible, pros continue surprise me here thought worth shot :-)

this achieve (sorry faint image):

triangle cut out

please not answer question 3 column solution or similar, more capable of achieving way... want know if there cool css tricks out there can achieve few graphics, if not no graphics, possible?

you seperate triangle rectangle , go this:

<div id="rectangle"><div id="mask"></div></div>    #rectangle{width:300px; height:120px; position:relative; margin-top:100px; background: rgb(30,87,153); /* old browsers */ /* ie9 svg, needs conditional override of 'filter' 'none' */ background: url(data:image/svg+xml;base64,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); background: -moz-linear-gradient(top,  rgba(30,87,153,1) 0%, rgba(125,185,232,1) 100%); /* ff3.6+ */ background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(30,87,153,1)), color-stop(100%,rgba(125,185,232,1))); /* chrome,safari4+ */ background: -webkit-linear-gradient(top,  rgba(30,87,153,1) 0%,rgba(125,185,232,1) 100%); /* chrome10+,safari5.1+ */ background: -o-linear-gradient(top,  rgba(30,87,153,1) 0%,rgba(125,185,232,1) 100%); /* opera 11.10+ */ background: -ms-linear-gradient(top,  rgba(30,87,153,1) 0%,rgba(125,185,232,1) 100%); /* ie10+ */ background: linear-gradient(to bottom,  rgba(30,87,153,1) 0%,rgba(125,185,232,1) 100%); /* w3c */ filter: progid:dximagetransform.microsoft.gradient( startcolorstr='#1e5799', endcolorstr='#7db9e8',gradienttype=0 ); /* ie6-8 */ }  #rectangle:after{content:" "; position:absolute; width:0px; height:0px; top:0; left:100px;border:1px solid white; border-color:transparent white transparent white; border-width:0px 50px 50px 50px;}  #mask{position:absolute; left:0; width:100px; height:50px; background:white;} #mask:after{position:absolute; content:" "; left:200px; width:100px; background:white; height:50px; }

fiddle here.


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