Change Text Box Color using Required Field Validator. No Extender Controls Please

Question

I need to change color of TextBox whenever its required field validator is fired on Clicking the Submit button

Answer 1

in css:

       .form-control
        {
            width: 100px;
            height: 34px;
            padding: 6px 12px;
            font-size: 14px;
            color: black;
            background-color: white;
        }
        .form-control-Error
        {
            width: 100px;
            height: 34px;
            padding: 6px 12px;
            font-size: 14px;
            color: #EBB8C4;
            background-color: #F9F2F4
            border: 1px solid #DB7791;
            border-radius: 4px;
        }

in your page:

at the end of your page above of