reduce logo size if too wide on small screens

Author: OriolAbril

src/labs_sphinx_theme/static/css/style.css

@@ -55,6 +55,12 @@ html[data-theme="dark"] {
   text-decoration: none;
 }
 
+.navbar-brand img {
+  height: 100%;
+  max-width: 40vw;
+  object-fit: contain;
+}
+
 /*  Remove footer icon text for small screen width and increase icons size */
 @media (max-width: 760px) {
   .footer-item li a.nav-link i {