| <!doctype html> | |
| <html> | |
| <head> | |
| <title>fractions color</title> | |
| <meta charset="utf-8"/> | |
| </head> | |
| <body> | |
| <math> | |
| <mfrac> | |
| <mtext><span style="display: inline-block; width: 3em; height: 1em; background: red;"></span></mtext> | |
| <mtext><span style="display: inline-block; width: 5em; height: 1em; background: green;"></span></mtext> | |
| </mrow> | |
| </mfrac> | |
| </math> | |
| </body> | |
| </html> |