2.
1.用户名<label for="username">用户名 : </label><input type="text" id="username">2.选择城市<label for="city"> 选择城市</label><select name="" id="city"> <option>北京</option> <option>上海</option> <option>广东</option></select>3.模态对话框
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Title</title> <style> .shadow{ position: fixed; top:0; bottom:0; left: 0; right: 0; background-color: rgba(0,0,0,0.3); z-index: 100; } .mode{ position: fixed; width: 700px; height: 370px; background-color: white; top:50%; left: 50%; margin-left: -350px; margin-top: -185px; z-index: 101; } .content{ height: 1000px; background-color: green; } </style></head><body><div> 老夫聊发少年狂,治肾亏,不含糖。聪慧的爆米花,千骑用康王。为报倾城随太守,三百年,九芝堂。酒酣胸胆尚开张,西瓜霜,喜之郎。持节云中,三金葡萄糖。布丁酒店选好房,西北望,阿迪王。</div><div class="content"></div><div class="mode"> 用户名: <input type="text"> 密码: <input type="password"></div><div class="shadow"></div></body></html>