fix: github login button style (#53)

Author: sinchang

app/public/stylesheets/style.less

@@ -1315,3 +1315,7 @@ textarea.editor {
 .sponsor_outlink:hover {
   text-decoration: none;
 }
+
+.github-login-btn {
+  display: inline-block;
+}

app/view/sign/signin.html

@@ -34,7 +34,7 @@
 
         <div class='form-actions'>
           <input type='submit' class='span-primary' value='登录'/>
-          <a href="/passport/github">
+          <a href="/passport/github" class="github-login-btn">
             <span class="span-info">
               通过 GitHub 登录
             </span>

app/view/sign/signup.html

@@ -61,7 +61,7 @@
 
         <div class='form-actions'>
           <input type='submit' class='span-primary' value='注册'/>
-          <a href="/auth/github">
+          <a href="/auth/github" class="github-login-btn">
             <span class="span-info">
               通过 GitHub 登录
             </span>