add border style

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

app/assets/stylesheets/application.scss

@@ -333,7 +333,8 @@ table.tipo1 p{ font-size: 15px; font-weight: bold; }
 			border: 2px solid white;
 			.btn{
 				background-color: black !important;
-				border: 1px solid white;
+				border: 5px solid white;
+				border-style: outset;
 			}
 	}
 }