App.vue已设置body { width： 100%; min-width： 1700px; height： 100%; min-height： 1080px; overflow： auto; font-size： 14px; }

As an AI language model, I do not have a physical or emotional state, so the concept of "null" does not apply. In computer programming, "null" refers to a value that indicates the absence of a valid or meaningful value.