GitHub remove all inline styles but `max-width: 100%`
<p align="center">
<a href="http://foundation.zurb.com/">
- <img src="https://user-images.githubusercontent.com/9939075/38782856-2a64a43e-40fa-11e8-89cd-e873af03b3c4.png" alt="Foundation for Sites 6" style="width: 100%; max-width: 384px;"/>
+ <img src="https://user-images.githubusercontent.com/9939075/38782856-2a64a43e-40fa-11e8-89cd-e873af03b3c4.png" alt="Foundation for Sites 6" width="448px" style="max-width:100%;"/>
</a>
</p>