Not all elements are 'visible' when the widget is loaded on the page. For instance, when you see an image captcha, all audio elements are missing. Therefore, you have to take care of the visible and invisible elements when you skin the widget (unless you remove some of its functionality).

Image classes version 1

Audio classes version 1

.g-recaptcha
.recaptcha_isnot_showing_audio
.recaptcha_is_showing_audio
The widget's outer classes
#recaptcha_response_field
The user's response input field
.recaptcha_only_if_image
The link that gives the user the possibility to switch to an audio captcha
.recaptcha_only_if_audio
The link that gives the user the possibility to switch to an image captcha
#recaptcha_image
The image shown or the audio place-holder
.recaptcha_only_if_incorrect_sol
Feedback message when the user's answer is wrong, like Incorrect, please try again
.recaptcha_reload
The link that offers the user the possibility to load a new captcha
.recaptcha_help
The link to get help from Google
#recaptcha_audio_play_again .recaptcha_audio_cant_hear_link
The link that offers to play the sound again
#recaptcha_audio_download .recaptcha_audio_cant_hear_link
The link that offers to download the sound
#recaptcha_privacy .recaptcha_only_if_privacy
The link that goes to Google's privacy and terms of use pages

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