效果如图:
代码如下:
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>用户登录</title> <style type="text/css"> *{margin: 0; padding: 0; }/*去掉页面样式,通用选择器*/ body{color:white}/*标签选择器*/ .context{background: #50A3A2; position: absolute; left: 0; top:50%; width: 100%; height: 400px; margin-top: -200px; overflow: hidden;/*隐藏滚动条*/ }/*定位浏览器边距位置 左 上 */ .container{/*类选择器*/ max-width: 600px; height: 400px;/*左右*/ padding: 80px 0;/*上下*/ text-align: center; margin: 0 auto;/*居中显示*/ } .container h1{/*派生*/ font-size: 40px; font-weight: 300;} form{padding: 20px 0;} form input{border: 1px solid #FFF; width: 220px; padding: 10px 15px; display: block; margin: 0 auto 10px auto; border-radius: 30px;/*圆角*/ font-size: 18px; font-weight: 300; text-align: center; } form button{ background: white; border: 0; padding: 10px 15px; color: green; border-radius: 8px; width: 250px; font-size: 16px; } form button:hover{ background:#CCC; /*鼠标移动上去按钮颜色变灰色*/ } </style> </head> <body> <div class="context"> <div class="container"> <h1>Welcome</h1> <form action="" method="get"> <input type="text" name="userid" placeholder="请输入账号"/> <input type="password" name="userpw" placeholder="请输入密码"/> <button type="submit">登 陆</button> </form> </div> </div> </body> </html>