根本没有:size这个face attribute，只有:height，14号是:height 140
File: elisp.info, Node: Face Attributes, Next: Defining Faces, Up: Faces
39.12.1 Face Attributes
-----------------------
...
‘:family’
...
‘:foundry’
...
‘:family’
...
‘:width’
...
‘:height’
...
‘:weight’
...
‘:slant’
...
‘:foreground’
...
‘:distant-foreground’
...
‘:background’
...
‘:underline’
...
‘:overline’
...
‘:strike-through’
...
‘:box’
...
‘:inverse-video’
...
‘:stipple’
...
‘:font’
...
‘:inherit’
...
‘:extend’
...