一.实现画面

2.代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
#photo {
position: relative;
margin: 0 auto;
width: 1600px;
height: 800px;
background-color: #D3D3D3;
}
.imgdiv {
float: left;
position: absolute;
margin-top: 30px;
margin-left: 30px;
}
img {
width: 500px;
height: 668px;
background-color: #E0FFFF;
}
input {
position: relative;
bottom: -40px;
margin: 0 auto;
left: 40%;
width: 200px;
height: 50px;
}
</style>
<script type="text/javascript">
window.onload = function() {
var beginBtn = document.getElementById("beginBtn");
var endBtn = d