<div class="content">
<h2>Escolha um nome para o counter</h2> <h2>Incremente o counter</h2>
<h2>Assinale o counter no seu elemento</h2>
</div>
.content {
max-width: 600px;
margin: 0 auto;
padding: 1rem;
counter-reset: section;
}
h2 {
color: #222;
}
h2:before {
counter-increment: section;
content: counter(section);
display: inline-block;
vertical-align: middle;
text-align: center;
line-height: 32px;
width: 32px;
height: 32px;
color: #fff;
font-size: 18px;
background: #26bcde;
border-radius: 50%;
margin-right: 1rem;
}
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