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在iOS和iPadOS上安装此APP
  1. 在Safari中轻敲分享图标
  2. 滚动菜单并轻敲添加到主屏幕
  3. 轻敲右上角的添加按钮。
在安卓上安装此APP
  1. 轻敲浏览器右上角的三个点菜单 (⋮) 。
  2. 轻敲添加到主屏幕安装APP
  3. 轻敲安装进行确认。
  • 选择语言

CSS Gradients

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CSS Gradients


CSS Gradients

The CSS gradient functions let you display smooth transitions between two or more colors within an element.

CSS defines three types of gradients:

  • Linear Gradients - The color transition goes down, up, left, right, or diagonally
  • Radial Gradients - The color transition goes out from a central point
  • Conic Gradients - The color transition is rotated around a center point

The CSS gradient functions are used within the background-image property.

A Linear Gradient Background

CSS linear-gradient() Function

The CSS linear-gradient() function creates a linear gradient.

A linear gradient defines a color transition that goes in a straight line, it can go down, up, to left, to right, or diagonally.

A linear gradient requires at least two color stops. Color stops are the colors you want to render smooth transitions among. You can also set a starting point and a direction (or an angle) along with the gradient effect.

Syntax

background-image: linear-gradient(direction, color-stop1, color-stop2, ...);

Direction - Top to Bottom (this is default)

The following example shows a linear gradient that goes from top to bottom. It starts red, transitioning to yellow:

top to bottom (default)

Example

#grad {
  background-image: linear-gradient(to bottom, red, yellow);
}
Try it Yourself »

Direction - Bottom to Top

The following example shows a linear gradient that goes from bottom to top. It starts red, transitioning to yellow:

bottom to top

Example

#grad {
  background-image: linear-gradient(to top, red, yellow);
}
Try it Yourself »

Direction - Left to Right

The following example shows a linear gradient that goes from left to right. It starts red, transitioning to yellow:

left to right

Example

#grad {
  background-image: linear-gradient(to right, red , yellow);
}
Try it Yourself »

Direction - Diagonal

The following example shows a linear gradient that goes from top-left to bottom-right. It starts red, transitioning to yellow:

top left to bottom right

Example

#grad {
  background-image: linear-gradient(to bottom right, red, yellow);
}
Try it Yourself »


Linear Gradient - Using Angles

If you want more control over the direction of the gradient, you can define an angle parameter, instead of the predefined directions (to bottom, to top, to right, to left, to bottom right, etc.).

  • A value of 0deg is equivalent to "to top".
  • A value of 90deg is equivalent to "to right".
  • A value of 180deg is equivalent to "to bottom".
  • A value of 270deg equivalent to "to left"

Syntax

background-image: linear-gradient(angle, color-stop1, color-stop2);

The following example shows how to use angles on linear gradients:

180deg

Example

#grad {
  background-image: linear-gradient(180deg, red, yellow);
}
Try it Yourself »

Linear Gradient - Multiple Color Stops

The following example shows a linear gradient (from top to bottom) with multiple color stops:

Example

#grad {
  background-image: linear-gradient(red, yellow, green);
}
Try it Yourself »

The following example shows a linear gradient (from left to right) with the color of the rainbow and some text:

Rainbow Background

Example

#grad {
  background-image: linear-gradient(to right, red,orange,yellow,green,blue,indigo,violet);
}
Try it Yourself »

Linear Gradient - Transparency 

CSS gradients also support transparency, which can be used to create fading effects.

To add transparency, we use the rgba() function to define the color stops. The last parameter in the rgba() function can be a value from 0 to 1, and it defines the transparency of the color: 0 indicates full transparency, 1 indicates full color (no transparency).

The following example shows a linear gradient that goes from left to right. It starts fully transparent, transitioning to full color red:

Example

#grad {
  background-image: linear-gradient(to right, rgba(255,0,0,0), rgba(255,0,0,1));
}
Try it Yourself »

CSS repeating-linear-gradient() Function

The CSS repeating-linear-gradient() function is used to repeat linear gradients:

Example

A repeating linear gradient:

#grad {
  background-image: repeating-linear-gradient(red, yellow 10%, green 20%);
}
Try it Yourself »



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配置浏览器推送通知

Chrome (安卓)
  1. 轻敲地址栏旁的锁形图标。
  2. 轻敲权限 → 通知。
  3. 调整你的偏好。
Chrome (台式电脑)
  1. 点击地址栏中的挂锁图标。
  2. 选择网站设置。
  3. 找到通知选项并调整你的偏好。