@media only screen and (max-width : 480px) {
    #recaptcha_challenge_image{
    margin: 0 !important;
    width: 100% !important;
    height: auto !important;
    }
    #recaptcha_response_field
    {
    margin: 0 !important;
    width: 100% !important;
    height: auto !important;
    }
    .recaptchatable #recaptcha_image {
    margin: 0 !important;
    width: 100% !important;
    height: auto !important;
    }
    .recaptchatable .recaptcha_r1_c1, 
    .recaptchatable .recaptcha_r3_c1, 
    .recaptchatable .recaptcha_r3_c2, 
    .recaptchatable .recaptcha_r7_c1, 
    .recaptchatable .recaptcha_r8_c1, 
    .recaptchatable .recaptcha_r3_c3, 
    .recaptchatable .recaptcha_r2_c1, 
    .recaptchatable .recaptcha_r4_c1, 
    .recaptchatable .recaptcha_r4_c2, 
    .recaptchatable .recaptcha_r4_c4, 
    .recaptchatable .recaptcha_image_cell {

    margin: 0 !important;
    width: 100% !important;
    background: none !important;
    height: auto !important;
    }
}