<div style="max-width:500px">
<p class="text-break">aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbccccccccccccccccccccccccccddddddddddddddddddddddddddddddddddeeeeeeeeeeeeeeeeeeeeeeeee</p>
</div>
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbccccccccccccccccccccccccccddddddddddddddddddddddddddddddddddeeeeeeeeeeeeeeeeeeeeeeeee
You don't need to remember all CSS classes. Just use the Bootstrap Editor instead.