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How to use css top attribute

藏色散人

May 30, 2019 am 09:25 AM

css The top attribute specifies the top edge of the element. This attribute defines the offset between the top margin boundary of a positioned element and the upper boundary of its containing block. All major browsers support the top attribute.

How to use css top attribute

How to use the css top attribute?

Function: The top attribute specifies the top edge of the element. This property defines the offset between the top margin boundary of a positioned element and the top boundary of its containing block.

Note:

For static elements, it is auto;

For length values, it is the corresponding absolute length;

For percentage values, it is the specified value;

Otherwise, it is auto.

For relative definition elements, if top and bottom are both auto, their calculated values are both 0;

If one of them is auto, the opposite of the other value is taken;

If neither is auto, bottom will take the opposite number of top value.

Note:

All major browsers support the top attribute. The attribute value "inherit" is not supported in any version of Internet Explorer (including IE8).

css top attribute usage example

<html>
<head>
<style type="text/css">
img
{
position:absolute;
top:5px;
}
</style>
</head>
<body>
<img  src="/static/imghwm/default1.png"  data-src="https://img.php.cn/upload/article/000/005/656/5af270fd37755429.jpg"  class="lazy"   / alt="How to use css top attribute" >
<h1 id="This-nbsp-is-nbsp-a-nbsp-heading">This is a heading</h1>
</body>
</html>

Effect output:

How to use css top attribute

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