New answers tagged plugin-contact-form-7
This is really a pure CSS issue with wpcf7 input classes needing widths on the inputs. It's best if you learn to use Firebug with Firefox, or use the developer tools in Chrome or Safari or IE to view and work with the CSS and HTML in your theme.
What you are looking for are conditional fields. I never did one myself but it seems somebody else was looking for that before you: http://stackoverflow.com/questions/7412261/can-i-have-conditional-fields-using-contact-form-7-plugin-in-wordpress Please be careful when using this approach as I didn't test it myself neither am I sure if it still works.
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