修改全屏按钮

index.html

@@ -21,7 +21,7 @@
         <div class="logo_head" id="logo_head">DreamLife|ToolBox</div>
         <button class="toggle-menu" id="toggle-menu">☰</button>
         <button id="fullscreen-button" class="fullscreen-btn">
-            <span class="icon">&#x26F6;</span>
+            <span class="icon"><img src="icon/full.png" width="30px"></span>
         </button>
     </header>
 
@@ -35,8 +35,8 @@
         <nav>
             <a id="sidebar-fullscreen-button" href="#" class="sidebar-link">
                 <div class="link-content">
-                    <i class="icon">&#x26F6;</i>  <!-- 初始图标 -->
-                    <span>全屏</span>
+                    <span class="icon"><img src="icon/full.png" width="30px"></span>
+                    <span class="btn-text">全屏</span>
                 </div>
             </a>
         </nav>