change background-color when active and focus

Signed-off-by: Matheus Agio Nerone <man13@inf.ufpr.br>

app/assets/stylesheets/application.scss

@@ -322,6 +322,12 @@ table.tipo1 p{ font-size: 15px; font-weight: bold; }
 		a:hover{
 			background-color: #1E1E1E !important;
 		}
+		a:active{
+			background-color: #1E1E1E !important;
+		}
+		a:focus{
+			background-color: #1E1E1E !important;
+		}
 	}
 	.divider{
 		background-color: white;