Fix form allignment in mobile view. (#17007)

* Fix form alignement in mobile view

* Remove margin left

* Add mare space between input and button

layouts/index.html

@@ -14,6 +14,7 @@
         <link href="https://cdn-images.mailchimp.com/embedcode/horizontal-slim-10_7.css" rel="stylesheet" type="text/css">
         <style type="text/css">
         	#mc_embed_signup{clear:left; width:100%;}
+		    #mc_embed_signup .button, #mc_embed_signup input.email {margin-right:15px; vertical-align: bottom}
         	/* Add your own MailChimp form style overrides in your site stylesheet or in this style block.
         	   We recommend moving this block and the preceding CSS link to the HEAD of your HTML file. */
         </style>
@@ -27,7 +28,7 @@
         	<input type="email" value="" name="EMAIL" class="email" id="mce-EMAIL" placeholder="email address" aria-label="email" required>
             <!-- real people should not fill this in and expect good things - do not remove this or risk form bot signups-->
             <div style="position: absolute; left: -5000px;" aria-hidden="true"><input type="text" name="b_3885586f8f1175194017967d6_11c1b8bcb2" tabindex="-1" value=""></div>
-            <div class="clear" style="margin-left: 15px;"><input type="submit" value="Subscribe" name="subscribe" id="mc-embedded-subscribe" class="button"></div>
+            <div class="clear"><input type="submit" value="Subscribe" name="subscribe" id="mc-embedded-subscribe" class="button"></div>
             </div>
         </form>
         <h5 style="text-align: center"><a href="https://us10.campaign-archive.com/home/?u=3885586f8f1175194017967d6&id=11c1b8bcb2" aria-label="Kube Weekly" style="color: #3371E3; font-weight: 400; font-size: 20px">{{ T "main_kubeweekly_past_link" }}</a></h5>