Update style.css

style.css

@@ -171,10 +171,12 @@ body {
     text-align: center;
     display: flex;
     justify-content: center;
+    flex-direction: column;
 }
 
 .how-to-use h2 {
     font-weight: bold;
+    margin-bottom: 20px;
 }
 
 .steps {