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margin-top property

Sets or retrieves the height of the top margin of the object.

Syntax

margin-top: <margin-width> | inherit

Property values

margin-width: Default. Top margin is set equal to the bottom margin.
inherit: Integer, followed by a percent sign (%). The value is a percentage of the height of the parent object.

CSS information

Applies To	All elements
Media	visual
Inherited	no
Initial Value	0

Standards information

CSS 2.1, Section 5.5.1

Remarks

As of Microsoft Internet Explorer 4.0 or later, you can specify possible length values relative to the height of the element's font (em) or the height of the letter "x" (ex).

In Microsoft Internet Explorer 3.0, the specified margin value is added to the default value of the object. In Internet Explorer 4.0 or later, the margin value is absolute. The margin properties do not work with the td and tr objects in Internet Explorer 4.0, but they do work in Internet Explorer 3.0. To set margins in the cell for Internet Explorer 4.0 or later, apply the margin to an object, such as div or p, within the td.

As of Microsoft Internet Explorer 5.5, this property applies to inline elements. With earlier versions of Windows Internet Explorer, inline elements must have an absolute position or layout to use this property. Element layout is set by providing a value for the height property or the width property.

For inline elements, the value of this property is used to compute the border area of a surrounding inline element, if present. This value does not contribute to the height of a line.

Negative margins are supported, except for top and bottom margins on inline objects.

Examples

The following examples use the margin-top attribute and the margin-top property to change the margin of the object.

This example uses hr as a selector and margin1 as a class in an embedded style sheet to set the top margin of the horizontal rule.

Code example: http://samples.msdn.microsoft.com/workshop/samples/author/dhtml/refs/margin-top.htm


<STYLE>
    HR { margin-top:2cm }
    .margin1 { margin-top:4cm }
</STYLE>
</HEAD>
<BODY>
<HR onclick="this.className='margin1'" ondblclick="this.className=''">
</STYLE>

This example uses inline scripting to set and reset the margin when the onclick and ondblclick events occur, respectively.

Code example: http://samples.msdn.microsoft.com/workshop/samples/author/dhtml/refs/marginTop.htm


<HR onclick="this.style.marginTop='2cm'" 
ondblclick="this.style.marginTop=''">

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