查看“︁模板:首页新闻框”︁的源代码

<div class="mainpage-box" style="border:1px solid #ccc; border-radius:8px; margin:0.5em; flex:1; display:flex; flex-direction:column;">
  <div class="mainpage-header" style="font-weight:bold; padding:0.5em; color:white; background: {{{颜色|#2a4b8d}}};">
    {{{标题}}}
  </div>
  <div class="mainpage-content" style="padding:0.5em 1em;">
    <div style="margin-left:0;">{{{内容|}}}</div>
  </div>
</div>