collapse

css/reset.css

@@ -182,3 +182,18 @@ img.picture{
 footer#bottom{
     font-size:  medium;
 }
+
+/*collapse*/
+.collapse > a{
+    cursor: pointer;
+    display: block;
+}
+.collapse:focus{
+    outline: none;
+}
+.collapse > div{
+    display: none;
+}
+.collapse:focus div{
+    display: block; 
+}