Appendix A: style adjustments

cassiozen · cassiozen · commit a3f83d2e4864 · 2016-01-28T03:50:10.000-02:00
diff --git a/materials/appendixA/styles.css b/materials/appendixA/styles.css
@@ -122,13 +122,17 @@ p, li{
 header {
   display: none;
   height: 40px;
+  position: relative;
 }
 
 header button {
   border: none;
   background: none;
   color: #fff;
   font-size: 25px;
+  position: absolute;
+top: 50%;
+transform: translateY(-50%);
 }
 header button:focus {outline:0;}
 
