Font-size:10px

#1

I get stuck in there,please help me.I‘m sure the input is 10px,Why is this happening?

#2

this issue is caused by your browser, you have a minimum font-size setting, do a google search:
change minimum font-size chrome
if you don't use chrome, change it with the browser you are using

#3

The problem is solved.thank you very much! ! !

#4

No need to change browser, just simply magnify your screen ~!