diff --git a/resources/auth_css_theme.xml b/resources/auth_css_theme.xml
index 3700a54..78b374b 100644
--- a/resources/auth_css_theme.xml
+++ b/resources/auth_css_theme.xml
@@ -3,8 +3,8 @@
   <message id="Wt.Auth.field">
     <![CDATA[
     ${<if:{1}>}
-      <label for="${id:{1}}">${tr:Wt.Auth.{1}}
-        ${{1}-info class="Wt-info"}
+      <label for="${id:{1}}" class="bulma-label">${tr:Wt.Auth.{1}}
+        ${{1}-info class="Wt-info bulma-help"}
       </label>
       ${{1}}
     ${</if:{1}>}
@@ -16,13 +16,13 @@
       <h2>${tr:Wt.Auth.login-form-title}</h2>
       <p>${tr:Wt.Auth.login-form-info}</p>
 
-      <div class="Wt-fields">
+      <div class="Wt-fields bulma-field">
         ${<if:passwords>}
-          <label for="${id:user-name}">${user-name-label}
-            ${user-name-info class="Wt-info"}
+          <label for="${id:user-name}" class="bulma-label">${user-name-label}
+            ${user-name-info class="Wt-info bulma-help"}
             ${user-confirm-email class="Wt-info"}
           </label>
-          ${user-name}
+          ${user-name class="bulma-input"}
 
           ${block:Wt.Auth.field password}
           ${block:Wt.Auth.field remember-me}