diff --git a/src/components/FLVPLayer.astro b/src/components/FLVPLayer.astro
index 7c05bc7..b7cbae7 100644
--- a/src/components/FLVPLayer.astro
+++ b/src/components/FLVPLayer.astro
@@ -68,8 +68,23 @@ const id = `vp_${Math.random().toString(36).slice(2)}`;
                 >🔊</button
             >
         </div>
-        <button id={`${id}_fsbtn`} class="btn" aria-label="Fullscreen">⤢</button
-        >
+        <button id={`${id}_fsbtn`} class="btn" aria-label="Fullscreen">
+            <svg
+                width="20"
+                height="20"
+                viewBox="0 0 24 24"
+                fill="none"
+                stroke="currentColor"
+                stroke-width="2"
+                stroke-linecap="round"
+                stroke-linejoin="round"
+            >
+                <path d="M8 3H5a2 2 0 0 0-2 2v3"></path>
+                <path d="M21 8V5a2 2 0 0 0-2-2h-3"></path>
+                <path d="M3 16v3a2 2 0 0 0 2 2h3"></path>
+                <path d="M16 21h3a2 2 0 0 0 2-2v-3"></path>
+            </svg>
+        </button>
     </div>
 </div>