1. 基础外观

    <button>按钮</button>
    <input type="button" value="按钮">
    <input type="submit" value="按钮">
    <a href="#" class="e_button">按钮</a>
    
  2. 扩展外观

    1. 反色外观

      <button class="e_button-2">按钮</button>
      <input class="e_button-2" type="button" value="按钮">
      <input class="e_button-2" type="submit" value="按钮">
      <a href="#" class="e_button-2">按钮</a>
      
    2. 弹出提示按钮

      <button class="e_button-3">按钮</button>
      <input class="e_button-3" type="button" value="按钮">
      <input class="e_button-3" type="submit" value="按钮">
      <a href="#" class="e_button-3">按钮</a>
      
    3. 弹出提示删除按钮

      <button class="e_button-delete">按钮</button>
      <input class="e_button-delete" type="button" value="按钮">
      <input class="e_button-delete" type="submit" value="按钮">
      <a href="#" class="e_button-delete">按钮</a>
      
    4. 带图标的按钮

      1. 搜索图标

        <button class="e_button-search"></button>
        <input class="e_button-search" type="button" value="">
        <input class="e_button-search" type="submit" value="">
        <a href="#" class="e_button-search">按钮</a>