diff --git a/css/main.scss b/css/main.scss
index f7f45bf..6d9738e 100644
--- a/css/main.scss
+++ b/css/main.scss
@@ -133,4 +133,22 @@ img.avatar{
   -o-border-radius: 50%;
   -ms-border-radius: 50%;
   object-fit: cover;
+}
+
+@media only screen and (max-width: 720px) {
+  div #organizers {
+    display: grid;
+    width: 100%;
+    grid-template-columns: repeat(1, 1fr);
+    grid-column-gap: 50px;
+    margin-bottom: 40px;
+  }
+
+  div #speakers {
+    display: grid;
+    width: 100%;
+    grid-template-columns: repeat(1, 1fr);
+    grid-column-gap: 50px;
+    margin-bottom: 40px;
+  }
 }
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