美化移动设备下界面的样式，并优化操作逻辑

index.html

@@ -18,13 +18,15 @@
 </head>
 <body>
     <header>
-        <input type="text" id="search-input" placeholder="搜索工具...." />
+        <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>
         </button>
     </header>
 
+    <input type="text" id="search-input" placeholder="搜索工具...." />
+
     <aside id="sidebar" class="sidebar">
         <div class="logo">
             <span class="part1">DreamLife</span>