要素5
<style>
.demo_css_sprt, .demo_css_sprt div {
background: white;
border: 1px dotted red;
padding: 1em;
}
.demo_css_sprt div {
margin: 1em 0;
}
.demo_css_sprt > div {
background: mistyrose;
}
.demo_css_sprt p {
border: 1px dashed blue;
padding: 1em;
}
</style>
<div class="demo_css_sprt">
要素1
<div>要素2</div>
<div>
要素3
<div>要素4</div>
</div>
<p>要素5</p>
</div>