How to pass svg validity in HTML4?

Question

css

Hello, who faced the problem of validating svg tags in HTML4?
Please tell me how did you solve this problem?
It's about a similar kind of use of svg

<svg class="icon nav-helper__icon nav-helper__icon-sm"><use xlink:href="#icon-zakaz"></use></svg>
и
<svg style="display: none"><symbol viewBox="0 0 26 24" id="icon-vopros"><title>vopros</title><path d="M5 23v-5H1V1.083h24V18H11.333L5.......

Thank you.

Answer 1

use single tag.
It needs to be closed.