代码编辑器：
x
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<meta charset="utf-8"><link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/>3
<style>4
.newspaper5
{6
column-count:3;7
column-gap:40px;8
column-rule-style:outset;9
column-rule-color:#ff0000;10
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/* Firefox */12
column-count:3;13
column-gap:40px;14
column-rule-style:outset;15
column-rule-color:#ff0000;16
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/* Safari and Chrome */18
column-count:3;