Overriding google recaptcha css to make it respons

问题:

I installed Google Recaptcha in a site (not a Wordpress site or Joomla) So do not offer any WP plugins or Joomla Extension :)

My problem is, the site is responsive and recaptcha is not. When I use Firebug to find its styles I realized that not only the library that Google provides does not contain the css files, and I can't override them in my custom-styles.css file because Google, very thoughtfully, applied the !important selector hack to EVERYTHING in their css, but I even tried classing it so that I can make a breach and hopefully override Google's styles but then the plugin doesn't work:(

Any ideas?

p.s. I am not using a different re-captcha either. Sorry. I'm sure there are some recaptcha geeks out here ;)

Here is the HTML. This is what the recaptcha.php renders from the server. THIS IS NOT WHAT i I HAVE IN THE ACTUAL PHP PAGE...(Don't have a CSS, and that is the main problem)

<div id="recaptcha_widget_div" style="" class=" recaptcha_nothad_incorrect_sol recaptcha_isnot_showing_audio"><div id="recaptcha_area"><table id="recaptcha_table" class="recaptchatable recaptcha_theme_red"> 
  <tbody>
     <tr> 
        <td colspan="6" class="recaptcha_r1_c1"></td> 
     </tr> 
     <tr> 
        <td class="recaptcha_r2_c1"></td> 
        <td colspan="4" class="recaptcha_image_cell">
            <center><div id="recaptcha_image" style="width: 300px; height: 57px;">
                  <img id="recaptcha_challenge_image" alt="reCAPTCHA challenge image" height="57" width="300" src="http://www.google.com/recaptcha/api/image?c=03AHJ_VutTaFjCI-gV3f3W2_M6gix7arVpF-9EOz-f773U5LmDrl33mKCn9wMXYGe0t8-xy-1HD0ysHzOI_NYyOtxOxD_a4Jj5G5h4bDMalKBQ5PDJaaE6ur8K44ilzimisHHYX6xZJ4y9xeuP6lT4vQa59-nNPju3VrlolnYgbM6oKgD7el1Rr9cpbRojjc_2zFraHkTjxyUU"></div>
            </center>
         </td> 
         <td class="recaptcha_r2_c2"></td> 
      </tr> 
      <tr> 
         <td rowspan="6" class="recaptcha_r3_c1"></td> 
         <td colspan="4" class="recaptcha_r3_c2"></td> 
         <td rowspan="6" class="recaptcha_r3_c3"></td> 
      </tr> 
      <tr> 
         <td rowspan="3" class="recaptcha_r4_c1" height="49"> 
              <div class="recaptcha_input_area"> 
                  <span id="recaptcha_challenge_field_holder" style="display: none;">                      
                      <input type="hidden" name="recaptcha_challenge_field" id="recaptcha_challenge_field" value="03AHJ_VutTaFjCI-gV3f3W2_M6gix7arVpF-9EOz-f773U5LmDrl33mKCn9wMXYGe0t8-xy-1HD0ysHzOI_NYyOtxOxD_a4Jj5G5h4bDMalKBQ5PDJaaE6ur8K44ilzimisHHYX6xZJ4y9xeuP6lT4vQa59-nNPju3VrlolnYgbM6oKgD7el1Rr9cpbRojjc_2zFraHkTjxyUU"></span>
                      <input name="recaptcha_response_field" id="recaptcha_response_field" type="text" autocorrect="off" autocapitalize="off" placeholder="Type the text" autocomplete="off" style="font-style: italic;"> 
                           <span id="recaptcha_privacy" class="recaptcha_only_if_privacy"><a href="http://www.google.com/intl/en/policies/" target="_blank">Privacy &amp; Terms</a></span> 
              </div> 
          </td> 
          <td rowspan="4" class="recaptcha_r4_c2"></td> 
          <td><a id="recaptcha_reload_btn" title="Get a new challenge">
              <img id="recaptcha_reload" width="25" height="17" src="http://www.google.com/recaptcha/api/img/red/refresh.gif" alt="Get a new challenge"></a></td> 
          <td rowspan="4" class="recaptcha_r4_c4"></td> 
      </tr> 
      <tr> 
          <td><a id="recaptcha_switch_audio_btn" class="recaptcha_only_if_image" title="Get an audio challenge">
               <img id="recaptcha_switch_audio" width="25" height="16" alt="Get an audio challenge" src="http://www.google.com/recaptcha/api/img/red/audio.gif"></a><a id="recaptcha_switch_img_btn" class="recaptcha_only_if_audio" title="Get a visual challenge">
               <img id="recaptcha_switch_img" width="25" height="16" alt="Get a visual challenge" src="http://www.google.com/recaptcha/api/img/red/text.gif"></a>
          </td> 
      </tr> 
      <tr> 
          <td><a id="recaptcha_whatsthis_btn" title="Help">
               <img id="recaptcha_whatsthis" width="25" height="16" src="http://www.google.com/recaptcha/api/img/red/help.gif" alt="Help"></a>
          </td> 
      </tr> 
      <tr> 
          <td class="recaptcha_r7_c1"></td> <td class="recaptcha_r8_c1"></td> 
      </tr> 
  </tbody>
 </table> 
</div> 
</div>

This is what I do have in the page

  require_once('recaptchalib.php');
  $publickey = "your_public_key"; // you got this from the signup page
  echo recaptcha_get_html($publickey);

And here is my problem

回答1:

Changed auto height and media query

@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;
    }

}

回答2:

Google has complete documentation on how to style recaptcha forms here:

https://developers.google.com/recaptcha/docs/display

and you can completely override the html/css they provide with your own.

回答3:

You may want to add some CSS styling but we opted for removing everything that wasn't necessary.

Add this code to your css file :

@media (min-width: 320px) and (max-width: 480px) {
        #recaptcha_challenge_image{
        margin: 0 !important;
        width: 100% !important;
        }
        #recaptcha_response_field
        {
        margin: 0 !important;
        width: 100% !important;
        }
        .recaptchatable #recaptcha_image {
        margin: 0 !important;
        width: 100% !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;
        }

    }

回答4:

Try this one. Google responsive reCAPTCHA

回答5:

For reCAPTCHA (requiers jQuery):

$(function(){
  function rescaleCaptcha(){
    var width = $('.g-recaptcha').parent().width();
    var scale;
    if (width < 302) {
      scale = width / 302;
    } else{
      scale = 1.0; 
    }

    $('.g-recaptcha').css('transform', 'scale(' + scale + ')');
    $('.g-recaptcha').css('-webkit-transform', 'scale(' + scale + ')');
    $('.g-recaptcha').css('transform-origin', '0 0');
    $('.g-recaptcha').css('-webkit-transform-origin', '0 0');
  }

  rescaleCaptcha();
  $( window ).resize(function() { rescaleCaptcha(); });

});

This basically checks your browser width and depends the scale it should be transformed too. Best solution around at this point.

Screenshots result (full width, smaller width, smallest width):

回答6:

The best way is that you use the google recaptcha and use this css code to make responsive,

#rc-imageselect, .g-recaptcha {
   display: inline; //the most important
}

#rc-imageselect{
   max-width: 100%;
}

.g-recaptcha>div>div{
   width: 100% !important;
   height: 78px;
   transform:scale(0.77); //the code to rescale the captcha obtained in this page
   webkit-transform:scale(0.77);
   text-align: center;
   position: relative;
}

回答7:

You can simply add some transform style for the specific device you needed:

 @media only screen and (max-width : 767px)     {

 #rc-imageselect, .g-recaptcha {
    transform: scale(0.77);
    -webkit-transform: scale(0.77);
    transform-origin: 0 0;
    -webkit-transform-origin: 0 0; }
}

回答8:

In my case I decreased the scale of it and I force some horizontal alignment on center through Bootstrap 4 grid system. Click here to see the result.

Code:

<div class="row justify-content-center">
     <div class="col g-recaptcha" data-sitekey="check_reCaptcha_doc_to_set_this" style="width: 304px !important; max-width: 304px !important; -ms-transform: scale(0.8, 0.8); -webkit-transform: scale(0.8, 0.8); transform: scale(0.8, 0.8); margin: 0px; padding: 0px;">
     </div>
</div>

回答9:

Building off Jan's answer and Siraj Khan's answer, I added some more styling to format the buttons on the right side that allow you to refresh the image, play out loud, learn more, and read privacy & terms easier.

@media only screen and (max-width : 480px) {
  #recaptcha_challenge_image{
    margin: 0 !important;
    width: 100% !important;
  }
  #recaptcha_response_field {
    margin: 0 !important;
    width: 100% !important;
  }
  .recaptchatable #recaptcha_image {
    margin: 0 !important;
    width: 95% !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;
  }
  #recaptcha_table tbody tr td {
    padding: 0 !important;
    width: 75px;
  }
  .recaptchatable .recaptcha_image_cell {
    padding-right: 0 !important;
  }
  #recaptcha_privacy a {
    line-height: 1.2em;
  }
  span#recaptcha_privacy {
    width: 50px;
  }
}

回答10:

may be this could help you use transform on your main div where u call recaptcha

transform: scale(0.75);
transform-origin: left top;

回答11:

Here is the best workaround I have found in 2017/2018 :

.g-recaptcha > div {
    width: 100% !important;
}

.g-recaptcha iframe {
    width: 100% !important;
}

回答12:

This is my solution with media queries. I use scale to scale it down to a reasonable size for mobile.

A simple and effective solution:

@media (max-width:575px) {
    #rc-imageselect, .g-recaptcha {
        transform:scale(0.77);
        transform-origin:0 0;
        margin-bottom: -20px;
    }
}