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task18.html
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task18.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<style>
*{
margin: 0;
padding: 0;
}
fieldset{
margin-left: 1em;
margin-top: 1em;
overflow: hidden;
border: none;
}
input{
float: left;
}
.btn{
float: left;
}
#left{
margin-left: .5em;
}
#right{
margin-left: 1.5em;
}
.queue{
background-color: red;
padding: .7em;
color: #ffffff;
margin-left: 1em;
float: left;
}
.container{
clear: both;
overflow: hidden;
margin: 1em;
}
.container div{
margin-top: 1em;
}
</style>
<title>Document</title>
</head>
<body>
<fieldset>
<input type="text" id="input" placeholder="请输入数值">
<section id="left" class="btn">
<button id="leftIn">左侧入</button>
<button id="rightIn">右侧入</button>
</section>
<section id="right" class="btn">
<button id="leftOut">左侧出</button>
<button id="rightOut">右侧出</button>
</section>
</fieldset>
<div class="container">
</div>
<script src="js/task18.js"></script>
</body>
</html>