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Basically I want to create a shape in CSS only (so no images) that is the opposite of a heart shape. I don't know how to explain it properly so here is an image:
The blue is the background, as you can see, but the shape that I want to create is not a heart, it is the shape of the black rectangle.
If I would have the following shape (THE GRAY NOT THE BLACK)
I could duplicate it and then rotate it, that would give me the shape I am looking for.
710
You need to add width and height, and that's it. First two shapes are created. Adding border-radius and you have circles and ovals. More complex shapes require to add :before and :after pseudo-elements or more HTML.
<body>
Feel free to skip directly to the complete demo at the bottom of this answer :)
The rounded top left and top right corners are created with box-shadow on the two pseudo elements with border-radius: 50% — .heart:before and .heart:after — They form two crescent shapes that look like this:
The angled shape is created by the box-shadow on .heart. Combined with the two circles, it looks like this:
We now need to fill in the gaps. This is done by the pseudo elements of the .box-shape container — .shape-box:before and .shape-box:after. The excess is cut-off neatly with overflow: hidden on the .shape-box. Combined with our pieces above, they look like this:
Combine it all together and we get this nicely cut out heart shape. It is all contained in .shape-box.
body {
background: #00A2F6;
}
.shape-box {
height: 504px;
width: 504px;
position: relative;
margin: 100px;
overflow: hidden;
}
.shape-box:before,
.shape-box:after {
content: '';
display: block;
height: 100px;
width: 120px;
background: #2B2B2B;
transform: rotate(45deg);
left: 190px;
position: absolute;
top: 40px;
}
.shape-box:after {
width: 760px;
height: 750px;
box-shadow: inset 0 0 0 220px #2B2B2B;
top: -150px;
left: -130px;
background: none;
}
.heart {
transform: rotate(45deg);
height: 357px;
width: 356px;
box-shadow: inset 0 0 0 50px #2B2B2B;
position: absolute;
left: 74px;
top: 34px;
}
.heart:before,
.heart:after {
content: '';
display: block;
width: 151px;
height: 151px;
border-radius: 50%;
box-shadow: -40px -15px 0 20px #2B2B2B;
position: absolute;
left: 50px;
top: 157px;
}
.heart:after {
box-shadow: -15px -40px 0 21px #2B2B2B;
left: 156px;
top: 51px;
}<div class="shape-box">
<div class="heart"></div>
</div>This can be done with a combination of svg gradients, multiple backgrounds, and a little creative tiling/placement. Sample CSS from my working jsfiddle (without vendor prefixes, i.e. -webkit and -moz):
height: 400px;
width: 400px;
background-image:
radial-gradient(75% 85.5%, circle, transparent 25%, black 26%),
radial-gradient(25% 85.5%, circle, transparent 25%, black 26%),
linear-gradient(225deg, transparent 25%, black 25%),
linear-gradient(135deg, transparent 25%, black 25%);
background-size: 200px 200px;
background-position: top left, top right, bottom left, bottom right;
background-repeat: no-repeat;
This makes a heart-shaped cutout in the middle of a 400px square element. It can be modified to fit whatever size element you want.
Update: here’s a more complex fiddle that uses six gradients instead of four, but looks a bit nicer.
36
Based on the work that Mark Hubbart did I was able to push this to a slightly more advanced form in this fiddle
This is not 100% complete yet as it will need some media queries to work across more browsers but it does show the start of a much more flexible working for the same goal.
#backgrounder {
z-index: 2;
background-image:
radial-gradient(68% 100%, circle, transparent 48%, white 30%),
radial-gradient(32% 100%, circle, transparent 48%, white 30%),
radial-gradient(110% 1%, circle, transparent 65%, white 30%),
radial-gradient(-8.5% 1%, circle, transparent 65%, white 30%),
linear-gradient(220deg, transparent 41%, white 30%),
linear-gradient(139deg, transparent 41%, white 30%);
background-image:
-webkit-radial-gradient(68% 100%, circle, transparent 48%, white 30%),
-webkit-radial-gradient(32% 100%, circle, transparent 48%, white 30%),
-webkit-radial-gradient(110% 1%, circle, transparent 65%, white 30%),
-webkit-radial-gradient(-8.5% 1%, circle, transparent 65%, white 30%),
linear-gradient(220deg, transparent 41%, white 30%),
linear-gradient(139deg, transparent 41%, white 30%);
background-size: 51% 31%, 50% 31%, 51% 50%, 50% 50%, 51% 51%, 50% 51%;
background-position: top left, top right, 0% 30%, 100% 30%, bottom left, bottom right;
background-repeat: no-repeat;
position: absolute;
top: 0; right: 0; bottom: 0; left: 0;
}
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