<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>基本图形绘制</title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
#myCanvas{
border: 1px solid red;
margin: 50px auto;
}
</style>
</head>
<body>
<canvas id="myCanvas" width="500" height="500"></canvas>
</body>
<script type="text/javascript">
</script>
</html>
2 回答
weibo_哆啦A梦有大口袋_0
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>基本图形绘制</title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
#myCanvas{
display: block;
border: 1px solid red;
margin: 50px auto;
}
</style>
</head>
<body>
<canvas id="myCanvas" width="500" height="500"></canvas>
</body>
<script type="text/javascript">
</script>
</html>只有块级元素才能使用，margin: 0 auto进行水平居中
行内元素的水平居中对它的父级使用text-align:center,
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