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Summary of commonly used color gradient methods

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Mar 22, 2018 pm 04:18 PM

SummarizemethodGradient

This time I will bring you a summary of commonly used color gradient methods, and what are the precautions for color gradient methods? The following is a practical case, let’s take a look.

1. Linear gradient: linear-gradient

## Grammar:

gradient> = linear-gradient([ [ | to [, ]+)

or-corner> = [left | right] || [top | bottom]

= [ |]?

The following values are used to represent the direction of the gradient, which can be set using angles or keywords:

: Use angle values to specify the direction (or angle) of the gradient.

to left: Set the gradient from right to left. Equivalent to: 270deg

to right: Set the gradient from left to right. Equivalent to: 90deg

to top: Set the gradient from bottom to top. Equivalent to: 0deg

to bottom: Set the gradient from top to bottom. Equivalent to: 180deg. This is the default value, which is equivalent to leaving it blank.

Used to specify the starting and ending colors of the gradient:

: Specify the color.

# & lt; length & gt ;: Specify the startup position with length value. The negative value is not allowed

# & lt; percentage & gt;: Specify the start and end color position with a percentage.

Example:

p {  
    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. Radial gradient: radial-gradient

Grammar:

position

> = [ ① | ① | left | center① | right ]? [ ② | ② | top | center② | bottom ]?

; = circle | ellipse ; = |[ ||] ; = closest-side | closest-corner | farthest-side | farthest-corner
; =
= [ | ]{2}
= | = radial-gradient([ [ || ] [ at ]? , | at , ]?[[ , ]]+)

Determine the position of the center of the circle. If two parameters are provided, the first represents the abscissa and the second represents the ordinate; if only one is provided, the second value defaults to 50%, that is, center

Use the length value Specify the abscissa value of the center of the radial gradient circle. Can be negative.

# & lt; Percentage & GT; ①: Specify the horizontal coordinate value of the radial gradient center with percentage. Can be negative.

# & lt; length & gt; ②: Specify the vertical coordinate value of the radial gradient and round heart with a length value. Can be negative.

# & lt; Percentage & gt; ②: Specify the vertical margin value of the radial gradient center with percentage. Can be negative.

center①：设置中间为径向渐变圆心的横坐标值。

center②：设置中间为径向渐变圆心的纵坐标值。

left：设置左边为径向渐变圆心的横坐标值。

right：设置右边为径向渐变圆心的横坐标值。

top：设置顶部为径向渐变圆心的纵坐标值。

bottom：设置底部为径向渐变圆心的纵坐标值。

确定圆的类型

circle：指定圆形的径向渐变

ellipse：指定椭圆形的径向渐变。

circle | ellipse 都接受该值作为 size。

closest-side：指定径向渐变的半径长度为从圆心到离圆心最近的边。

closest-corner：指定径向渐变的半径长度为从圆心到离圆心最近的角。

farthest-side：指定径向渐变的半径长度为从圆心到离圆心最远的边。

farthest-corner：指定径向渐变的半径长度为从圆心到离圆心最远的角。

circle 接受该值作为 size。

：用长度值指定正圆径向渐变的半径长度。不允许负值。

ellipse 接受该值作为 size。

：用长度值指定椭圆径向渐变的横向或纵向半径长度。不允许负值。

：用百分比指定椭圆径向渐变的横向或纵向半径长度。不允许负值。

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);  
}

三、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%);  
}

四、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：

nbsp;html>  
  
  
<meta>  
<title>ImageCSS3</title>  
<style>  
p {  
    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>  
  
  
<!-- 指定线性渐变起止色 -->  
<p></p>  
<!-- 指定线性渐变起止色位置 -->  
<p></p>  
<!-- 指定线性渐变颜色渐变方向和起止色位置 -->  
<p></p>  
<!-- 指定线性渐变颜色渐变方向 -->  
<p></p>  
<!-- 设置渐变从右上到左下 -->  
<p></p>  
  
<!-- 浮动p换行，此处指定p宽高和边界，是为了覆盖前面定义的p统一CSS样式，  
 可以尝试去掉指定的p宽高和边界，看看效果 -->  
<p></p>  
<!-- 以中心点为圆心的圆形径向渐变 -->  
<p></p>  
<!-- 径向渐变半径长度：圆心到离圆心最近边的长度 -->  
<p></p>  
<!-- 径向渐变半径长度：圆心到离圆心最远边的长度 -->  
<p></p>  
<!-- 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 -->  
<p></p>  
<!-- 同时指定径向渐变的圆心和半径 -->  
<p></p>  
<!-- 径向渐变组合 -->  
<p></p>  
  
<p></p>  
<!-- 指定颜色起止色位置的重复线性渐变 -->  
<p></p>  
<!-- 从左到右渐变的重复线性渐变 -->  
<p></p>  
<!-- 渐变角度为45度的重复线性渐变 -->  
<p></p>  
<!-- 从左下到右上的重复线性渐变 -->  
<p></p>  
  
<p></p>  
<!-- 圆形重复径向渐变 -->  
<p></p>  
<!-- 渐变方向为左上到右下的重复径向渐变 -->  
<p></p>  
<!-- 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 -->  
<p></p>

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