codepen iframe theme id
iframe css theme
demos
theme id
theme-id=25577
theme-id=25579
https://codepen.io/xgqfrms/embed/PoNRmBZ?height=368&theme-id=25577&default-tab=result
https://codepen.io/xgqfrms/embed/PoNRmBZ?height=368&theme-id=25579&default-tab=result
<iframe height="361" style=" 100%;" scrolling="no" title="css margin collapsing （1. 相邻兄弟元素）" src="https://codepen.io/xgqfrms/embed/mdPxmjy?height=361&default-tab=result" frameborder="no" loading="lazy" allowtransparency="true" allowfullscreen="true">
See the Pen <a href='https://codepen.io/xgqfrms/pen/mdPxmjy'>css margin collapsing （1. 相邻兄弟元素）</a> by xgqfrms
(<a href='https://codepen.io/xgqfrms'>@xgqfrms</a>) on <a href='https://codepen.io'>CodePen</a>.
</iframe>
<iframe height="361" style=" 100%;" scrolling="no" title="css margin collapsing （1. 相邻兄弟元素）" src="https://codepen.io/xgqfrms/embed/mdPxmjy?height=361&theme-id=25577&default-tab=result" frameborder="no" loading="lazy" allowtransparency="true" allowfullscreen="true">
See the Pen <a href='https://codepen.io/xgqfrms/pen/mdPxmjy'>css margin collapsing （1. 相邻兄弟元素）</a> by xgqfrms
(<a href='https://codepen.io/xgqfrms'>@xgqfrms</a>) on <a href='https://codepen.io'>CodePen</a>.
</iframe>
<iframe height="361" style=" 100%;" scrolling="no" title="css margin collapsing （1. 相邻兄弟元素）" src="https://codepen.io/xgqfrms/embed/mdPxmjy?height=361&theme-id=25579&default-tab=result" frameborder="no" loading="lazy" allowtransparency="true" allowfullscreen="true">
See the Pen <a href='https://codepen.io/xgqfrms/pen/mdPxmjy'>css margin collapsing （1. 相邻兄弟元素）</a> by xgqfrms
(<a href='https://codepen.io/xgqfrms'>@xgqfrms</a>) on <a href='https://codepen.io'>CodePen</a>.
</iframe>
refs
https://codepen.io/xgqfrms/pen/mdPxmjy?editors=0010
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