Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.
Trailing slash on void elements has no effect and interacts badly with unquoted attribute values.

10px;">
  <img style="max-width: 500px; width: 100%; height: auto;" src="figures/plot_details-1.png" alt="Example of extending plot() with ggplot2 functions" />
</div
10px;">
  <img style="max-width: 400px; width: 100%; height: auto;" src="figures/gamma_poisson_mixture-1.png" alt="Gamma-Poisson Mixture CDF" />
</div