Refactor css

assets/styles/site.css

@@ -32,6 +32,7 @@ main {
     main {
         width: 29vw;
         margin: 2rem auto;
+        padding: 0;
     }
 }
 
@@ -112,7 +113,8 @@ nav > ul > li:before {
  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
 
 section {
-    margin-bottom: 2rem;
+    width: 100%;
+    margin: 2rem auto;
 }
 
 section:last-child {