- <color>:
- 指定颜色。
- <length>:
- 用长度值指定起止色位置。不允许负值
- <percentage>:
用百分比指定起止色位置。
示例:
div {width: 200px;height: 100px;margin: 10px 5px;border: 1px solid #ddd000;}#LinearStartToEnd { float:left; background: linear-gradient(#ff0000, #00ff00);}#LinearPercentage { float:left; background: linear-gradient(#0000ff, #ff0000 52%, #00ff00);}#LinearAnglePercentage { float:left; background: linear-gradient(90deg, #ff0000 20%, #00ff00 50%, #000000 80%);}#LinearAngle { float:left; background: linear-gradient(30deg, #ffff00 30%, #ff0000, #00ff00);}#LinearTopRight { float:left; background: linear-gradient(to right top, #00ff00, #ff0000 50%, #0000ff);}
2.径向渐变:radial-gradient 语法:
<position> = [ <length>① | <percentage>① | left | center① | right ]? [ <length>② | <percentage>② | top | center② | bottom ]?
<shape> = circle | ellipse
<size> = <extent-keyword>|[<circle-size>||<ellipse-size>]
<extent-keyword> = closest-side | closest-corner | farthest-side | farthest-corner
<circle-size> = <length>
<ellipse-size> = [ <length>| <percentage> ]{2}
<shape-size> = <length>| <percentage>
<radial-gradient> = radial-gradient([ [ <shape>|| <size> ] [ at <position> ]? , | at <position> , ]?<color-start>[[ , <color-end>]]+)
示例:
#RadialCenterCircle { float:left;background: radial-gradient(circle at center, #ff0000, #ffff00, #00ffff);}#RadialClosestSide { float:left;background: radial-gradient(circle closest-side, #ff0000, #00ff00, #ffff00);}#RadialFarthestSide { float:left;background: radial-gradient(farthest-side, #ff0000 20%, #ffff00 60%, #00ff00 80%);}#RadialRightTop { float:left;background: radial-gradient(at right top, #ff0000, #ffff00, #00ff00);}#RadialRadiusCenter { float:left;background: radial-gradient(farthest-side at top right, #ff0000, #ffff00, #01fefe);}#RadialGroup { float:left;background:radial-gradient(farthest-side at top right, #ff0000, #ffff00, #009f00, transparent),radial-gradient(60px at top left, #ff0000, #ffff00, #00ff0e);}
3.重复的线性渐变:repeating-linear-gradient
语法和参数类似线性渐变,这里不在赘述。详情请参考CSS手册。 示例:
#RepeatingLinearPercentage{ float:left;background: repeating-linear-gradient(#ff0000, #00ff00 10%, #000000 15%);}#RepeatingLinearRight { float:left;background: repeating-linear-gradient(to right, #ff0000, #00ff00 10%, #000000 15%);}#RepeatingLinearAngle { float:left;background: repeating-linear-gradient(45deg, #ff0000, #00ff00 10%, #0000ff 15%);}#RepeatingLinearBottomLeft { float:left;background: repeating-linear-gradient(to bottom left, #00ffff, #ff0000 10%, #00ff00 15%);}
3.重复的径向渐变:repeating-radial-gradient 语法和参数类似径向渐变,这里不在赘述。详情请参考CSS手册。
示例:
#RepeatingRadialCircle { float:left;background: repeating-radial-gradient(circle, #ff0000 0, #00ff00 10%, #0000ff 15%);}#RepeatingRadialTopLeft { float:left;background: repeating-radial-gradient(at top left, #ff0000, #00ff00 10%, #0de0f0 15%, #ffff00 20%, #000000 25%);}#RepeatingRadialClosestCorner { float:left;background: repeating-radial-gradient(circle closest-corner at 20px 50px, #00ff00, #ff0000 10%, #00ffff 20%, #ffff00 30%, #ff00ff 40%);}
完整的例子:<!DOCTYPE html><html><head><meta charset="utf-8" /><title>ImageCSS3</title><style>div {width: 200px;height: 100px;margin: 10px 5px;border: 1px solid #ddd000;}#LinearStartToEnd { float:left; background: linear-gradient(#ff0000, #00ff00);}#LinearPercentage { float:left; background: linear-gradient(#0000ff, #ff0000 52%, #00ff00);}#LinearAnglePercentage { float:left; background: linear-gradient(90deg, #ff0000 20%, #00ff00 50%, #000000 80%);}#LinearAngle { float:left; background: linear-gradient(30deg, #ffff00 30%, #ff0000, #00ff00);}#LinearTopRight { float:left; background: linear-gradient(to right top, #00ff00, #ff0000 50%, #0000ff);}#RadialCenterCircle { float:left;background: radial-gradient(circle at center, #ff0000, #ffff00, #00ffff);}#RadialClosestSide { float:left;background: radial-gradient(circle closest-side, #ff0000, #00ff00, #ffff00);}#RadialFarthestSide { float:left;background: radial-gradient(farthest-side, #ff0000 20%, #ffff00 60%, #00ff00 80%);}#RadialRightTop { float:left;background: radial-gradient(at right top, #ff0000, #ffff00, #00ff00);}#RadialRadiusCenter { float:left;background: radial-gradient(farthest-side at top right, #ff0000, #ffff00, #01fefe);}#RadialGroup { float:left;background:radial-gradient(farthest-side at top right, #ff0000, #ffff00, #009f00, transparent),radial-gradient(60px at top left, #ff0000, #ffff00, #00ff0e);}#RepeatingLinearPercentage{ float:left;background: repeating-linear-gradient(#ff0000, #00ff00 10%, #000000 15%);}#RepeatingLinearRight { float:left;background: repeating-linear-gradient(to right, #ff0000, #00ff00 10%, #000000 15%);}#RepeatingLinearAngle { float:left;background: repeating-linear-gradient(45deg, #ff0000, #00ff00 10%, #0000ff 15%);}#RepeatingLinearBottomLeft { float:left;background: repeating-linear-gradient(to bottom left, #00ffff, #ff0000 10%, #00ff00 15%);}#RepeatingRadialCircle { float:left;background: repeating-radial-gradient(circle, #ff0000 0, #00ff00 10%, #0000ff 15%);}#RepeatingRadialTopLeft { float:left;background: repeating-radial-gradient(at top left, #ff0000, #00ff00 10%, #0de0f0 15%, #ffff00 20%, #000000 25%);}#RepeatingRadialClosestCorner { float:left;background: repeating-radial-gradient(circle closest-corner at 20px 50px, #00ff00, #ff0000 10%, #00ffff 20%, #ffff00 30%, #ff00ff 40%);}</style></head><body><!-- 指定线性渐变起止色 --><div id="LinearStartToEnd"></div><!-- 指定线性渐变起止色位置 --><div id="LinearPercentage"></div><!-- 指定线性渐变颜色渐变方向和起止色位置 --><div id="LinearAnglePercentage"></div><!-- 指定线性渐变颜色渐变方向 --><div id="LinearAngle"></div><!-- 设置渐变从右上到左下 --><div id="LinearTopRight"></div><!-- 浮动Div换行,此处指定Div宽高和边界,是为了覆盖前面定义的Div统一CSS样式, 可以尝试去掉指定的Div宽高和边界,看看效果 --><div style="width:0; height:0; border:none; clear:both"></div><!-- 以中心点为圆心的圆形径向渐变 --><div id="RadialCenterCircle"></div><!-- 径向渐变半径长度:圆心到离圆心最近边的长度 --><div id="RadialClosestSide"></div><!-- 径向渐变半径长度:圆心到离圆心最远边的长度 --><div id="RadialFarthestSide"></div><!-- 左边为径向渐变圆心的横坐标值,顶边为径向渐变圆心的纵坐标值 --><div id="RadialRightTop"></div><!-- 同时指定径向渐变的圆心和半径 --><div id="RadialRadiusCenter"></div><!-- 径向渐变组合 --><div id="RadialGroup"></div><div style="width:0; height:0; border:none; clear:both"></div><!-- 指定颜色起止色位置的重复线性渐变 --><div id="RepeatingLinearPercentage"></div><!-- 从左到右渐变的重复线性渐变 --><div id="RepeatingLinearRight"></div><!-- 渐变角度为45度的重复线性渐变 --><div id="RepeatingLinearAngle"></div><!-- 从左下到右上的重复线性渐变 --><div id="RepeatingLinearBottomLeft"></div><div style="width:0; height:0; border:none; clear:both"></div><!-- 圆形重复径向渐变 --><div id="RepeatingRadialCircle"></div><!-- 渐变方向为左上到右下的重复径向渐变 --><div id="RepeatingRadialTopLeft"></div><!-- 重复径向渐变:渐变半径长度为从圆心到离圆心最近的角的距离 --><div id="RepeatingRadialClosestCorner"></div></body></html>
参考:CSS参考手册:http://css.doyoe.com/