PHP develops simple book background management system administrator login page
This section will implement a login page

<body> <div id="top"> </div> <form id="frm" name="frm" method="post" action="" onSubmit="return check()"> <div id="center"> <div id="center_left"></div> <div id="center_middle"> <div class="user"> <label>用户名: <input type="text" name="username" id="username" /> </label> </div> <div class="user"> <label>密 码: <input type="password" name="pwd" id="pwd" /> </label> </div> <div class="chknumber"> <label>验证码: <input name="code" type="text" id="code" maxlength="4" class="chknumber_input" /> </label> <img src="verify.php" style="vertical-align:middle" /> </div> </div> <div id="center_middle_right"></div> <div id="center_submit"> <div class="button"> <input type="submit" name="Submit" class="submit" value=" "> </div> <div class="button"><input type="reset" name="Submit" class="reset" value=""> </div> </div> </div> </form> <div id="footer"></div> </body>Package CSS styles to create a style.css file
<link rel="stylesheet" type="text/css" href="style.css"/>Add the above link in <head> and call the css file.
<style>
body {
margin:0;
padding:0;
overflow:hidden;
background:url(/upload/course/000/000/008/582403bb1d326430.gif) repeat-x #152753;
font-size: 12px;
color: #adc9d9;
}
#top {
margin: 0 auto;
clear:both;
height:318px;
width:847px;
background:url(/upload/course/000/000/008/58240450e5b8e453.gif) no-repeat;
}
#center {
height:84px;
text-align:center;
}
#center_left {
margin-left:65px;
float:left;
background:url(/upload/course/000/000/008/5824048c61afe958.gif) no-repeat;
height:84px;
width:381px;
}
/* IE7 HACK*/
*+html #center_left {
margin-left:206px !important;
}
/* END HACK*/
#center_middle {
float:left;
background:url(/upload/course/000/000/008/582404a48b17a540.gif) no-repeat;
height:84px;
width:162px;
}
#center_middle_right {
float:left;
background:url(/upload/course/000/000/008/582404c137d1a417.gif) no-repeat;
height:84px;
width:26px;
}
#center_submit {
float:left;
background:url(/upload/course/000/000/008/582404cee31fc426.gif) no-repeat;
height:84px;
width:67px;
}
#center_right {
float:left;
background:url(/upload/course/000/000/008/582404e5d1716236.gif) no-repeat;
height:84px;
width:211px;
}
#footer {
margin:0 auto;
background:url(/upload/course/000/000/008/5824050172cb6295.gif) no-repeat;
height:206px;
width:847px;
}
INPUT {
width:100px;
height:17px;
background-color:#87adbf;
border:solid 1px #153966;
font-size:12px;
color:#283439;
}
.chknumber_input {
width:40px;
}
.user {
margin: 6px auto;
}
/* IE7 HACK*/
*+html .user {
margin: 4px auto;
}
/* END HACK*/
.chknumber {
margin-bottom:3px;
text-align:left;
padding-left:3px
}
.button {
margin: 15px auto;
}
.submit{
background-image:url(/upload/course/000/000/008/58240523905f5156.gif); width:57px; height:20px;
}
.reset{
background-image:url(/upload/course/000/000/008/5824054310e9b518.gif); width:57px; height:20px;
}
IMG {
border:none;
cursor:pointer;
}
FORM {
margin:0;
padding:0
}
</style>Note: In order to display the effect on the page, no external CSS file is used. Directly load the css content in the <style> tag and place it in the <head> section.
new file
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>图书后台管理系统注册</title>
<style>
body {
margin:0;
padding:0;
overflow:hidden;
background:url(https://img.php.cn/upload/course/000/000/008/582403bb1d326430.gif) repeat-x #152753;
font-size: 12px;
color: #adc9d9;
}
#center {
height:84px;
text-align:center;
}
* IE7 HACK*/
*+html #center_left {
margin-left:206px !important;
}
/* END HACK*/
#center_middle {
float:left;
background:url(https://img.php.cn/upload/course/000/000/008/582404a48b17a540.gif) no-repeat;
height:84px;
width:162px;
}
#center_middle_right {
float:left;
background:url(https://img.php.cn/upload/course/000/000/008/582404c137d1a417.gif) no-repeat;
height:84px;
width:26px;
}
#center_submit {
float:left;
background:url(https://img.php.cn/upload/course/000/000/008/582404cee31fc426.gif) no-repeat;
height:84px;
width:67px;
}
#center_right {
float:left;
background:url(https://img.php.cn/upload/course/000/000/008/582404e5d1716236.gif) no-repeat;
height:84px;
width:211px;
}
INPUT {
width:100px;
height:17px;
background-color:#87adbf;
border:solid 1px #153966;
font-size:12px;
color:#283439;
}
.chknumber_input {
width:40px;
}
.user {
margin: 6px auto;
}
/* IE7 HACK*/
*+html .user {
margin: 4px auto;
}
/* END HACK*/
.chknumber {
margin-bottom:3px;
text-align:left;
padding-left:3px
}
.button {
margin: 15px auto;
}
.submit{
background-image:url(https://img.php.cn/upload/course/000/000/008/58240523905f5156.gif); width:57px; height:20px;
}
.reset{
background-image:url(https://img.php.cn/upload/course/000/000/008/5824054310e9b518.gif); width:57px; height:20px;
}
IMG {
border:none;
cursor:pointer;
}
FORM {
margin:0;
padding:0
}
</style>
</head>
<body>
<div id="top"> </div>
<form id="frm" name="frm" method="post" action="" onSubmit="return check()">
<div id="center">
<div id="center_left"></div>
<div id="center_middle">
<div class="user">
<label>用户名:
<input type="text" name="username" id="username" />
</label>
</div>
<div class="user">
<label>密 码:
<input type="password" name="pwd" id="pwd" />
</label>
</div>
<div class="chknumber">
<label>验证码:
<input name="code" type="text" id="code" maxlength="4" class="chknumber_input" />
</label>
<img src="verify.php" style="vertical-align:middle" />
</div>
</div>
<div id="center_middle_right"></div>
<div id="center_submit">
<div class="button"> <input type="submit" name="Submit" class="submit" value=" ">
</div>
<div class="button"><input type="reset" name="Submit" class="reset" value=""> </div>
</div>
</div>
</form>
<div id="footer"></div>
</body>
</html>
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