The font size of an input field or of a text box is smaller than expected in Internet Explorer 8 or in Internet Explorer 9

When you open a webpage in Internet Explorer 8 or in Internet Explorer 9, you notice that the font size of an input field or of a text box is smaller than expected.

This issue occurs when the following conditions are true:

• You define the font size of the element in a class by using the "ex" unit.�
• You define the same class at least three times.�

Note The redefinition of the class may be within the same document or in additional include statements in which the class is defined.

Security update information

To resolve this problem, install the most recent cumulative security update for Windows Internet Explorer. To do this, visit the following Microsoft website: For more technical information about the most recent cumulative security update for Windows Internet Explorer, visit the following Microsoft website: Note This update was first included in security update 2530548 (MS11-050). For more information, click the following article number to view the article in the Microsoft Knowledge Base:

To work around this issue, use one of the following methods:

• Remove the redundant definitions of the class.
• Use another kind of unit instead of the "ex" unit.