defined in css:
body{
text-align: center;
vertical-align:middle;
font: 16px Arial, Song Dynasty;
}
But the font cannot be vertically centered, why?
If you don’t give a height, how can it be vertically centered? Like I asked you to calculate the sum of n-n, do you know what n-n stands for?
Centering a single line of text line-height
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