There is an easy fix (text-indent) to keep the indented list effect with the :before pseudo class.
ul {
margin: 0;
}
ul.dashed {
list-style-type: none;
}
ul.dashed > li {
text-indent: -5px;
}
ul.dashed > li:before {
content: "-";
text-indent: -5px;
}Some text
<ul class="dashed">
<li>First</li>
<li>Second</li>
<li>Third</li>
</ul>
<ul>
<li>First</li>
<li>Second</li>
<li>Third</li>
</ul>
Last text