Changes

.button {

.button {

   width: 360px;

   width: 180px;

   height: 30px;

   height: 30px;

   font-family: 'Roboto', sans-serif;

   font-family: 'Roboto', sans-serif;

<br>

<br>

<p class="button"><strong>[https://forms.office.com/r/QQsXSFKmhA Register for Engagement Session #1]</strong></p>  

<p class="button"><strong>[https://forms.office.com/r/QQsXSFKmhA Register]</strong></p>  

<h3>Speakers</h3>

<h3>Speakers</h3>