Improved responsive design and fixed typos

style.css

@@ -386,13 +386,14 @@ footer{
     
     .three-gallery>figure{
         margin-bottom: 10px;
+        max-width: 50%;
     }
 }
 
-@media (max-width: 800px){
-    .three-gallery>figure{
+@media (max-width: 500px){
+   .three-gallery>figure{
         max-width: 100%;
-    }
+    } 
 }
 
 
@@ -410,5 +411,13 @@ footer{
     .vertical-divider-nav{
         display: none;
     }
+    .overview{
+        flex-direction: column;
+    }
+    
+    .tags>ul>li{
+        white-space: nowrap;
+        display: inline list-item;
+    }
 }