Tweak index page styles

themes/starter/source/assets/scss/modules/_index.scss

@@ -213,7 +213,7 @@
   position: relative;
   left: 40%;
   transform: translate(-40%, -40%);
-  display: flex;
+  display: none;
   flex-direction: column;
   width: 500px;
   height: 260px;
@@ -224,6 +224,7 @@
 }
 
 .intro__content.open {
+  display: flex;
   opacity: 1;
 }
 
@@ -273,6 +274,13 @@
   }
 }
 
+@media screen and (max-width: $mq-large) {
+  .grid__card {
+    top: 55%;
+    left: 58%;
+  }
+}
+
 @media screen and (max-width: $mq-medium) {
   .main__container {
     overflow-y: scroll;