diff --git a/app/assets/stylesheets/layout.scss b/app/assets/stylesheets/layout.scss
index 937e5b2a8..7abaee6e2 100644
--- a/app/assets/stylesheets/layout.scss
+++ b/app/assets/stylesheets/layout.scss
@@ -650,7 +650,7 @@ h2.sidebar-title {
 
 .auth-divider {
   border-bottom: 1px solid $border;
-  height: $line-height/2;
+  height: rem-calc(14);
   margin: $line-height 0;
   text-align: center;
 
diff --git a/app/views/devise/_omniauth_form.html.erb b/app/views/devise/_omniauth_form.html.erb
index 328a1ef1e..f2c567259 100644
--- a/app/views/devise/_omniauth_form.html.erb
+++ b/app/views/devise/_omniauth_form.html.erb
@@ -3,7 +3,7 @@
   <% if current_page?(new_user_session_path) %>
     <div class="row">
       <div class="small-12 column">
-        <div class="margin-bottom text-center">
+        <div class="margin-bottom">
           <strong><%= t("omniauth.info_sign_in") %></strong>
         </div>
       </div>
@@ -40,7 +40,7 @@
   <% elsif current_page?(new_user_registration_path) %>
     <div class="row">
       <div class="small-12 column">
-        <div class="margin-bottom text-center">
+        <div class="margin-bottom">
           <strong><%= t("omniauth.info_sign_up") %></strong>
         </div>
       </div>