Can you try the following code for the Facebook icon:
<a href="https://www.facebook.com/SanDiegoPride" title="Facebook">
<svg role="img" aria-label="Facebook" xmlns="https://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24"><path d="M9 8h-3v4h3v12h5v-12h3.642l.358-4h-4v-1.667c0-.955.192-1.333 1.115-1.333h2.885v-5h-3.808c-3.596 0-5.192 1.583-5.192 4.615v3.385z"></path></svg>
</a>
