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Add extra text for context

<a href="/cute-kittens/">
    Read more
    <span class="screen-reader-text">
        about cute kittens
    </span>
</a>.

Give a link with an icon an accessible name

<a href="https://twitter.com">
    <svg
        aria-hidden="true"
        focusable="false"
        [...]
    </svg>
    <span class="screen-reader-text">Twitter</span>
</a>