Speakers on homepage

The reading order and semantics here are wrong. The reading order should be left-to-right, top-to-bottom, but you have it going top-to-bottom, left-to-right. And this is a list, but not marked-up as such.

A better way to mark this up would be using the following pattern:
```html
<ul>
    <li>{{Speaker block}}</li>
    <li>{{Speaker block}}</li>
    ...
    <li>{{Speaker block}}</li>
</ul>
```
You'll have to adjust your CSS to achieve the desired layout. Let me know if you need help with that.