Found a bug_html/css_WEB-ITnose on the csdn academy application lecturer page

Found a bug in the csdn college application lecturer page

Page address: http://edu.csdn.net/lecturer/apply

Problem description: In "Mail address:" In this column, the error message "Length is 4-500 characters", but in fact the maximum number of characters set by the code is 15

Please see the screenshot below:

Environment used: Chrome browser, Win XP operating system