Documentation: fix docs index page on mobile (#8035)

diff --git a/docs/assets/extra.css b/docs/assets/extra.css
index bfa51760912b5abef67734345363dc39892c7175..270c1a21973f10dec0146aa7091d7f87a246d632 100644 (file)
--- a/docs/assets/extra.css
+++ b/docs/assets/extra.css
@@ -10,7 +10,7 @@
     --md-hue: 222;
 }
 
-@media (min-width: 400px) {
+@media (min-width: 768px) {
     .grid-left {
         width: 33%;
         float: left;