Update styles.css

styles.css

@@ -1,5 +1,9 @@
 .content {
-background: #FFEEEE;  /* fallback for old browsers */
-background: -webkit-linear-gradient(to right, #DDEFBB, #FFEEEE);  /* Chrome 10-25, Safari 5.1-6 */
-background: linear-gradient(to right, #DDEFBB, #FFEEEE); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
+  background: #FFEEEE;
+  background: -webkit-linear-gradient(to right, #DDEFBB, #FFEEEE);
+  background: linear-gradient(to right, #DDEFBB, #FFEEEE);
+}
+
+.panel-header {
+  color: black;
 }