Remove non-effective height property (does nothing here)

client/components/sidebar/sidebar.css

@@ -8,7 +8,6 @@
 .sidebar {
   background: #f7f7f7;
   box-shadow: -10px 0px 5px -10px #b3b3b3;
-  height: 100%;
 }
 .sidebar-xmark {
   position: absolute;