※★CSS
.sample20 {
quotes: "{" "}";
background-color:#ffccff;
}
.sample20:before {
content: open-quote;
background-color:#ffccff;
}
.sample20:after {
content: close-quote;
background-color:#ffccff;
}
※★HTML
<p>.text <span class="sample20"> color: #0000ff; </span></p>
.text color: #0000ff;