Detailed analysis of Outlines in CSS
Description:
A line drawn around the element, located outside the edge of the border, can highlight the element and does not occupy space.
In Not available under IE.
| Property | Description | Remarks |
| Composite attribute | Sets or retrieves the line outline outside the object, and the outer outline (outline) is drawn on the border (border) The outside is not necessarily a rectangle | outline:outline-color||outline-style||outline-width|
| Settings Or retrieve the color of the line outline outside the object | color: color | invert: default value, use the inverse color of the background color|
| none:default value | dotted:dotted outline | dashed:dotted outlinesolid:solid outline double: Double-line outer contour groove: Draw the 3D groove outer contour according to the value of outline-color ridge: Draw the 3D convex groove outer contour according to the value of outline-color inset: Draw the outer contour of the 3D groove according to the value of outline-color Draw a 3D concave outer contour based on the value of color outset: Draw a 3D convex outer contour based on the value of outline-color | outline-width
| medium:default.Default width | thin:less than the default width | thick:greater than the default widthlength:length |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>无标题页</title>
<style type="text/css">
span
{
border:solid 1px red;
display:block;
width:200px;
}
.span1
{
outline-style:dotted;
}
.span2
{
outline-style:dashed;
}
.span3
{
outline-style:groove;
}
.span4
{
outline-style:ridge;
}
.span5
{
outline-style:inset;
}
.span6
{
outline-style:outset;
}
</style>
</head>
<body>
<span class="span1">111111111</span><br />
<span class="span2">222222222</span><br />
<span class="span3">333333333</span><br />
<span class="span4">444444444</span><br />
<span class="span5">555555555</span><br />
<span class="span6">666666666</span>
</body>
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