Font-size <12px doesn't have effect in Google Chrome

disable the auto adjustment by following style.

* {
    -webkit-text-size-adjust: none;
}

-webkit-text-size-adjust is no longer working after Chrome 27.

Try using transform to refuce font-size forcely.

font-size:12px;
transform: scale(0.833);/*10/12=0.833, font-size:10px*/

According to http://www.google.com/support/forum/p/Chrome/thread?tid=389f306a52817110&hl=en Chrome supports a minimum font size. If you open "Documents and Settings\User_Name\Local Settings\Application Data\Google\Chrome\User Data\Default\Preferences" in a text editor, do you see something like the following?:

   "webkit": {
      "webprefs": {
         "default_fixed_font_size": 11,
         "default_font_size": 12,
         "fixed_font_family": "Bitstream Vera Sans Mono",
         "minimum_font_size": 12,
         "minimum_logical_font_size": 12,
         "sansserif_font_family": "Times New Roman",
         "serif_font_family": "Arial",
         "standard_font_is_serif": false,
         "text_areas_are_resizable": true
      }
   }

Closing Chrome, changing the minimum font size, and restarting Chrome may help.