“:read-write”选择器刚好与“:read-only”选择器相反,主要用来指定当元素处于非只读状态时的样式. HTML代码: <form action="#"> <div> <label for="name">姓名:</label> <input type="text" name="name" id="name" placeholder="大漠" /> </div> <div> <label for="address">地址:</label> <input type="text" name="address" id="address" placeholder="中国上海" readonly="readonly" /> </div> </form> CSS代码 input[type="text"]:-moz-read-write{ border-color: #f36; } input[type="text"]:read-write{ border-color: #f36; }