diff --git a/_static/custom_html.css b/_static/custom_html.css
index 5166763..380d3ef 100644
--- a/_static/custom_html.css
+++ b/_static/custom_html.css
@@ -72,10 +72,14 @@ div.sphinxsidebarwrapper div.logo a:not(:hover) {
 
 div.sphinxsidebarwrapper div.logo > a {
 	border: none;
-	width: 40%;
+	max-width: 40%;
 	margin-right: 0.5em;
 }
 
+div.sphinxsidebarwrapper div.logo img.logo {
+	max-height: 10em;
+}
+
 /* Footer */
 
 div.pre-footer {