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30 lines
364 B
HTML
30 lines
364 B
HTML
<!DOCTYPE html>
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<html>
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<head>
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<style type="text/css">
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#a {
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height: 20px;
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background-color: green;
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}
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#b {
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float: left;
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width: 50px;
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background-color: blue;
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margin-top: 20px;
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}
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#b div {
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height: 20px;
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background-color: red;
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margin-top: 40px;
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margin-bottom: 40px;
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}
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</style>
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</head>
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<body>
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<div id="a"></div>
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<div id="b">
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<div></div>
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</div>
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</body>
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</html>
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