About the layout of the Nine Miyagi grid on the mobile end (not written in the ui framework, but written by Mini Program)

first question:



1080x2160316x512,

I would like to ask how to set up this. I seldom do the mobile end at ordinary times, so it is stupid

second question:

Apr.07,2021

size is set to

max-width: 100%;
max-height: 100%;

or use background-iamge and control

via backgroun-size keyword.

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