Fixed loading block size

frontend/src/components/Blocks.css

@@ -29,10 +29,19 @@
   }
 
   .contentBlock {
-    min-width: 0;
     padding: 18px;
+    margin: 0 0 12px 0;
+    min-width: 400px;
+  }
+
+  .loadBlock {
+    margin: 0 12px;
   }
 }
 
 @media screen and (max-width: 500px) {
+  .contentBlock {
+    width: 100%;
+    min-width: 0;
+  }
 }

frontend/src/components/Blocks.js

@@ -37,7 +37,7 @@ const Blocks = () => {
           </div>
         </>
       ) : (
-        <div className="contentBlock">
+        <div className="contentBlock loadBlock">
           <center>Loading...</center>
         </div>
       )}