30 lines
611 B
HTML
30 lines
611 B
HTML
<!DOCTYPE html>
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<!-- Any copyright is dedicated to the Public Domain.
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- http://creativecommons.org/publicdomain/zero/1.0/ -->
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<html>
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<style>
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details {
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column-count: 3;
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column-rule: 1px solid lightgray;
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-webkit-column-count: 3;
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-webkit-column-rule: 1px solid lightgray;
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border: 1px solid lightblue;
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}
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summary {
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background-color: lightgreen;
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}
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</style>
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<body>
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<details open>
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<summary>Summary</summary>
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<p>line</p>
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<p>line</p>
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<p>line</p>
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<p>line</p>
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<p>line</p>
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<p>line</p>
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<p>line</p>
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</details>
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</body>
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</html>
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