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Summary
The margin-top CSS property of an element sets the margin space required on the top of an element. A negative value is also allowed.
This property has no effect on non-replaced inline elements, like <tt> or <span>.
| Initial value | 0 |
|---|---|
| Applies to | all elements, except elements with table display types other than table-caption, table and inline-table. It also applies to ::first-letter. |
| Inherited | no |
| Percentages | refer to the width of the containing block |
| Media | visual |
| Computed value | the percentage as specified or the absolute length |
| Animation type | a length |
| Canonical order | the unique non-ambiguous order defined by the formal grammar |
Syntax
/* <length> values */ margin-top: 10px; /* An absolute length */ margin-top: 1em; /* A length relative to the text size */ margin-top: 5%; /* A margin relative to the nearest block container's width */ /* Keyword values */ margin-top: auto; /* Global values */ margin-top: inherit; margin-top: initial; margin-top: unset;
Values
<length>- Specifies a fixed width. See
<length>for possible values. <percentage>- A
<percentage>always relative to the width of the containing block. auto- See
margin.
Formal syntax
<length> | <percentage> | auto
Examples
.content { margin-top: 5%; }
.sidebox { margin-top: 10px; }
.logo { margin-top: -5px; }
#footer { margin-top: 1em; }
Specifications
| Specification | Status | Comment |
|---|---|---|
| CSS Basic Box Model The definition of 'margin-top' in that specification. |
Working Draft | No significant change |
| CSS Transitions The definition of 'margin-top' in that specification. |
Working Draft | Defines margin-top as animatable. |
| CSS Level 2 (Revision 1) The definition of 'margin-top' in that specification. |
Recommendation | Removes its effect on inline elements. |
| CSS Level 1 The definition of 'margin-top' in that specification. |
Recommendation | Initial definition |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 1.0 | 1.0 (1.7 or earlier) | 3.0 | 3.5 | 1.0 (85) |
auto value |
1.0 | 1.0 (1.7 or earlier) | 6.0 (strict mode) | 3.5 | 1.0 (85) |
| Feature | Android | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|
| Basic support | 1.0 | 1.0 (1) | 6.0 | 6.0 | 1.0 |
Tag del documento e collaboratori
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