menu.admin.css 

.menu-enabled {
  width: 70px;
}
.menu-label {
  font-weight: bold;
}

File

drupal/core/modules/menu/css/menu.admin.css
View source
  1. .menu-enabled {

  2.   width: 70px;

  3. }

  4. .menu-label {

  5.   font-weight: bold;

  6. }