模板

 <section style="background-color: transparent;background-image: linear-gradient(currentcolor 0.1px, transparent 0.7px);background-size: 100% 26px;padding: 0px 2px;opacity: 1;">
  <section style="font-size: 15px;line-height: 26px;margin: 0px;padding: 0px;"><span leaf=""><br></span></section>
  <section style="font-size: 15px;line-height: 26px;margin: 0px;padding: 0px;"><span leaf="">Dear Yueok：</span></section>
  <section style="font-size: 15px;line-height: 26px;margin: 0px;padding: 0px;"><span leaf="">你是我的，我的，我在午后的风中放声大叫，第三行内容，自动换行时每一行都会落在横线上方。</span></section>
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<section style="background-color: transparent;background-image: linear-gradient(currentcolor 0.1px, transparent 0.7px);background-size: 100% 30px;padding: 0px 20px;opacity: 1;"><span leaf=""><img data-src="https://mmbiz.qpic.cn/mmbiz_jpg/aib2BhuTRlKILGiaFFibyhiaHyyoBUOG3tfp5tJ9icicWs32icO30icF25Wbfy4F8B785uj0tGJVokMAJ2QDko1WWjk1nplDWwN2kZw7T69fALNPV4w/640?wx_fmt=jpeg&amp;from=appmsg" class="rich_pages wxw-img" data-ratio="1" data-type="jpeg" data-w="1500" style="left: 40px;top: 60px;width: 120px;opacity: 0.45;z-index: 0;pointer-events: none;transform: rotate(45deg);transform-origin: right center;" data-imgfileid="100000026" data-aistatus="1" src="https://mmbiz.qpic.cn/mmbiz_jpg/aib2BhuTRlKILGiaFFibyhiaHyyoBUOG3tfp5tJ9icicWs32icO30icF25Wbfy4F8B785uj0tGJVokMAJ2QDko1WWjk1nplDWwN2kZw7T69fALNPV4w/640?wx_fmt=jpeg&amp;from=appmsg"></span>
  <section style="font-size: 15px;line-height: 26px;margin: 0px;padding: 0px;z-index: 1;"><span leaf="">第一行文字</span></section>
  <section style="font-size: 15px;line-height: 26px;margin: 0px;padding: 0px;z-index: 1;"><span leaf="">第二行文字，文字自动换行后每一行对齐网格</span></section>
  <section style="font-size: 15px;line-height: 26px;margin: 0px;padding: 0px;z-index: 1;"><span leaf="">这是背景图片，哇塞，好酷耶。</span></section>
  <section style="font-size: 15px;line-height: 26px;margin: 0px;padding: 0px;z-index: 1;"><span leaf=""><br></span></section>
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<p style="display: none;"><mp-style-type data-value="3"></mp-style-type></p>