56.md
... ...
@@ -3,6 +3,6 @@
3 3
1:[a,b,c]
4 4
5 5
<div>
6
-<nav> <button></button>
6
+<nav> <button style="background-color: #4CAF50; width: 150px; height: 50px; color: white;"></button>
7 7
</nav>
8 8
</div>