24 lines
503 B
HTML
24 lines
503 B
HTML
<!DOCTYPE html>
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<html>
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<head>
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<style>
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.box {
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width: 200px;
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height: 200px;
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background-color: green;
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filter: url(#sharpen);
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}
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</style>
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</head>
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<body>
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<svg style="display:none;" xmlns="http://www.w3.org/2000/svg" version="1.1">
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<defs>
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<filter id="sharpen">
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<feConvolveMatrix order="3 3" preserveAlpha="true" kernelMatrix="0 0 0 0 1 0 0 0 0" />
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</filter>
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</defs>
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</svg>
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<div class="box"></div>
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</body>
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</html>
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