diff --git a/themes/Ying/layouts/404.html b/themes/Ying/layouts/404.html
index eb341cfc..9c4177f6 100644
--- a/themes/Ying/layouts/404.html
+++ b/themes/Ying/layouts/404.html
@@ -10,19 +10,7 @@
                 <a href="{{ .Site.BaseURL }}" class="error-btn primary">
                     <i class="ri-home-4-line"></i> 返回首页
                 </a>
-                <a href="javascript:history.back()" class="error-btn secondary" id="back-btn">
-                    <i class="ri-arrow-left-line"></i> 返回上一页
-                </a>
             </div>
-            <script>
-                // 尝试将返回上一页按钮转换为真实的链接，以便支持 PJAX
-                (function() {
-                    var backBtn = document.getElementById('back-btn');
-                    if (backBtn && document.referrer && document.referrer.indexOf(window.location.host) !== -1) {
-                        backBtn.href = document.referrer;
-                    }
-                })();
-            </script>
         </div>
     </div>
 
@@ -95,6 +83,7 @@
         align-items: center;
         gap: 8px;
         border: 1px solid transparent;
+        box-sizing: border-box;
     }
 
     .error-btn.primary {
@@ -114,22 +103,6 @@
         box-shadow: 0 8px 25px rgba(0,0,0,0.15);
     }
 
-    .error-btn.secondary {
-        background-color: transparent;
-        color: var(--text-content-color);
-        border-color: var(--frame-color);
-    }
-
-    [data-theme="dark"] .error-btn.secondary {
-        color: var(--text-content-dark-color);
-        border-color: var(--frame-dark-color);
-    }
-
-    .error-btn.secondary:hover {
-        background-color: var(--bankuai-color);
-        transform: translateY(-2px);
-    }
-
     @keyframes fadeIn {
         from { opacity: 0; transform: translateY(20px); }
         to { opacity: 1; transform: translateY(0); }
@@ -142,9 +115,13 @@
         .error-actions {
             flex-direction: column;
             gap: 15px;
+            width: 100%;
+            padding: 0 20px;
+            box-sizing: border-box;
         }
         .error-btn {
             width: 100%;
+            max-width: 100%;
             justify-content: center;
         }
     }