diff --git a/content/posts/website-best-practices.md b/content/posts/website-best-practices.md
index 8a62d28..928987a 100644
--- a/content/posts/website-best-practices.md
+++ b/content/posts/website-best-practices.md
@@ -172,7 +172,7 @@ an example:
 
 <picture>
 <source srcset="https://seirdy.one/misc/website_colors.webp" type="image/webp">
-<img src="https://seirdy.one/misc/website_colors.png" alt="This page with a grey background, a header with unreadable black/grey text, and unreadable white-on-white code snippets">
+<img src="https://seirdy.one/misc/website_colors.png" width="637" height="484" alt="This page with a grey background, a header with unreadable black/grey text, and unreadable white-on-white code snippets">
 </picture>
 
 If you do explicitly set colors, please also include a dark theme using a media
diff --git a/themes/etch-custom/assets/css/main.css b/themes/etch-custom/assets/css/main.css
index 03e0c63..0d94335 100644
--- a/themes/etch-custom/assets/css/main.css
+++ b/themes/etch-custom/assets/css/main.css
@@ -59,6 +59,7 @@ h3 {
 }
 
 img {
+	height: auto;
 	margin: 0 auto;
 	max-width: 100%;
 }