Tweak iframe height of Google Form in Signup page

Author: yasulab

db/docs/signup.md

@@ -61,14 +61,14 @@ CoderDojo の立ち上げ申請がまだお済みでない場合は、下記ペ
 <iframe id="google-form" src="https://docs.google.com/forms/d/e/1FAIpQLSeq3k4q52gQgxf6emeqF9TYBXl_SxzhT87CUUoIc4uKNw2EYQ/viewform?embedded=true" width="100%" height="2600" frameborder="0" marginheight="0" marginwidth="0">読み込んでいます…</iframe>
 
 <style>
-  iframe { height: 2650px; }   /* Default height for desktop    */
+  iframe { height: 2900px; }   /* Default height for desktop    */
   /* Height adjustment for tablets
   @media (max-width: 768px) {
     iframe { height: 1000px; }
   }
   */
   @media (max-width: 480px) { /* Height adjustment for mobile devices */
-    iframe { height: 3200px; }
+    iframe { height: 3250px; }
   }
 </style>