Improve style

views/application.scss

@@ -5,6 +5,10 @@ body {
   padding: 0;
 }
 
+h1 {
+  margin: 10px 0;
+}
+
 ul {
   list-style-type: none;
   padding: 0;
@@ -14,28 +18,36 @@ ul {
     margin: 5px 0;
 
     a {
-      background-color: #eee;
-      color: #000;
-      font-size: 1.2em;
-      border-radius: 3px;
-      padding: 15px 0;
-      text-decoration: none;
-
       display: block;
       width: 100%;
       height: 100%;
+      font-size: 1.2em;
+      padding: 15px 0;
+    }
+  }
+}
+
+button, a {
+  border: none;
+  background-color: #eee;
+  color: #000;
+  border-radius: 3px;
+  text-decoration: none;
+  cursor: pointer;
 
   &:hover {
     background-color: #ccc;
   }
 }
-  }
+
+button {
+  margin: 2px;
 }
 
 #main {
-  width: 500px;
+  max-width: 500px;
   margin: 0 auto;
-  padding: 20px;
+  padding: 0;
   text-align: center;
 }