Why do Canadian immigrants to official website open a drop-down menu?

Ensure the convenience of operation. Official website, the Canadian Immigration Bureau, has no drop-down menu, because it can better ensure the convenience of operation. Due to the complexity of the business involved in the Immigration Department, if a drop-down menu appears, it may be difficult for users to understand its meaning and affect the experience. Canadian Immigration official website drop-down menu will also increase the loading time, which is not conducive to the efficiency of immigration application.