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CSS

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JavaScript

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HTML 

              
                <div class="foldtl">
     <h3>Folded Corners - top-left (tl)</h3>

    <p>Zombies reversus ab inferno, nam malum cerebro. De carne animata corpora quaeritis. Summus sit, morbo vel maleficia? De Apocalypsi undead dictum mauris. Hi mortuis soulless creaturas, imo monstra adventus vultus comedat cerebella viventium. Qui offenderit rapto, terribilem incessu. The voodoo sacerdos suscitat mortuos comedere carnem. Search for solum oculi eorum defunctis cerebro. Nescio an Undead zombies. Sicut malus movie horror.</p>

<p>Cum horribilem resurgere de sepulcris creaturis, sicut de iride et serpens. Pestilentia, ipsa screams. Pestilentia est haec ambulabat mortuos. Sicut malus voodoo. Aenean a dolor vulnerum aperire accedunt, mortui iam vivam. Qui tardius moveri, sed in magna copia sint terribiles legionis. Alii missing oculis aliorum sicut serpere crabs nostram. Putridi odores aere implent.</p>
</div>
<div class="foldtr">
     <h3>Folded Corners - top-right (tr)</h3>

    <p>Lee gallowglass ant-man, zero hellboy invisible woman red ghost firestar maya herrera bullseye arachne monica dawson hammer. Firestorm martian manhunter nite owl, supergirl amphibian rhona burchill invisible woman cloak black bolt spider-girl goku stephanie powell. Scarlet spider asp jeanne de wolfe magneto binary red wasp animal man hawkgirl. Psylocke warpath shocker captain universe phoebe mcallister black panther ringer. Tarantula-dead box hammer captain planet karen grant thor girl; thanos giant man.</p>

    <p>Vagabond, "man-wolf savage dragon boomer niki sanders miss martian leech," light lass guy gardner, miles warren vulcan thing moon knight. Piledriver venom ariel hulk tinkerer, songbird magog jubilee valerie hart emma frost. Fury beak malachi "the jellyfish" kelly jean grey kitty pride man-ape firepower.</p>
</div>
<div class="foldbr">
     <h3>Folded Corners - bottom-right (br)</h3>

   <p>Do you see any Teletubbies in here? Do you see a slender plastic tag clipped to my shirt with my name printed on it? Do you see a little Asian child with a blank expression on his face sitting outside on a mechanical helicopter that shakes when you put quarters in it? No? Well, that's what you see at a toy store. And you must think you're in a toy store, because you're here shopping for an infant named Jeb. </p>

<p>Well, the way they make shows is, they make one show. That show's called a pilot. Then they show that show to the people who make shows, and on the strength of that one show they decide if they're going to make more shows. Some pilots get picked and become television programs. Some don't, become nothing. She starred in one of the ones that became nothing. </p>

</div>
<div class="foldbl">
     <h3>Folded Corners - bottom-left (bl)</h3>

    Bacon ipsum dolor sit amet ground round tenderloin beef chicken shank t-bone. Frankfurter fatback spare ribs tenderloin. Pancetta pastrami sirloin brisket drumstick spare ribs pork ham hock. Chuck bacon sirloin, bresaola tail venison fatback ham. Flank pancetta prosciutto, swine salami strip steak ribeye. Cow chicken filet mignon venison. Bacon frankfurter corned beef flank capicola salami pork loin shankle turducken pork belly sausage.

Brisket pork chop chuck pancetta. Ham hock drumstick frankfurter, pancetta boudin rump filet mignon shank. Salami rump flank tri-tip. Chuck sausage venison short ribs jerky spare ribs, filet mignon flank turkey hamburger. Filet mignon andouille biltong sausage.
</div>
!

CSS 

              
                @import "compass/css3";

/* styling basics */
html {padding: 20px 0; background-color: #efefef;}
body {width: 80%; padding: 40px; margin: 0 auto; background: #a20000; box-shadow: 1px 1px 5px rgba(0,0,0,0.5); font-family: Verdana, Arial, sans-serif; font-size: 14px;}

h3 {color: #a20000; font-size: 18px;margin: 0 0 15px 0; }
p {margin-bottom: 10px;}
div {  margin-bottom: 20px;}
// =============================
// the main part
// tl == top-left | tr == top-right | br == bottom-right | bl == bottom-left
@mixin folded-corner($position, $dimension, $cornercol, $bgcol) {
  &{
	background-color: $bgcol;
	position: relative;
	}
    &:after{
    	content: "";
	    position: absolute;
	    height:$dimension;
	    display: block;
	    background: $bgcol;
	    @include box-sizing(border-box);
	    width: 100%;
    }
	&:before {
	    content: "";
	    position: absolute;
	    width: 0px;
	    height: 0px;
	}
	
	@if $position == tl {
		& {
		  border-left: $dimension solid $bgcol;
      padding: 0 $dimension $dimension $dimension;
		}
		&:after {
			top: -$dimension;
			right: 0;
			margin-left: $dimension;
		}
		
		&:before {
		  	top: -$dimension;
		  	left: -$dimension;
		  	border-bottom: $dimension solid $cornercol; 
		  	border-left: $dimension solid transparent;			
		}
 
		
	} @else if $position == tr {
		& {
		  border-right: $dimension solid $bgcol;
      padding: 0 $dimension $dimension $dimension;
		}
 
		&:after {
			top: -$dimension;
			left: 0;
			margin-right: $dimension;
		}
		
		&:before {
		  	top: -$dimension;
		  	right: -$dimension;
		  	border-bottom: $dimension solid $cornercol; 
		  	border-right: $dimension solid transparent;			
		}
 
		
	} @else if $position == br {
		& {
		  border-right: $dimension solid $bgcol;
      padding: $dimension $dimension 0 $dimension;
		}
 
		&:after {
			bottom: -$dimension;
			left: 0;
			margin-right: $dimension;
		}
		
		&:before {
		  	bottom: -$dimension;
		  	right: -$dimension;
		  	border-top: $dimension solid $cornercol; 
		  	border-right: $dimension solid transparent;			
		}
		
	} @else if $position == bl {
		& {
		  border-left: $dimension solid $bgcol;
      padding: $dimension $dimension 0 $dimension;
		}
 
		&:after {
			bottom: -$dimension;
			right: 0;
			margin-left: $dimension;
		}
		
		&:before {
		  	bottom: -$dimension;
		  	left: -$dimension;
		  	border-top: $dimension solid $cornercol; 
		  	border-left: $dimension solid transparent;			
		}
		
	}
	
}

// tl == top-left | tr == top-right | br == bottom-right | bl == bottom-left
.foldtl{       
    @include folded-corner(tl, 16px, #eee, #fff);
}
.foldtr{
    @include folded-corner(tr,16px, #000, #fff);
}
.foldbr{       
    @include folded-corner(br,16px, #666, #fff);
}
.foldbl{ 
    @include folded-corner(bl,16px, #333, #fff);
}
!

JS
!
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