I tried adding the icon by using the
::after
selector, of
option:checked
but that didn't work, apparently, they don't have an after (maybe, I tired *::after that didn't caused any change)
<select>
<option>
abc
</option>
<option>
bc
</option>
<option>
c
</option>
</select>
<style>
option:checked::after {
content:'\2713';
}
</style>