CSS3 - 渐变（CSS3 - Gradients）

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2023-12-01

什么是渐变？

渐变显示两种或多种颜色的组合，如下所示 -

渐变的类型

线性渐变（向下/向上/向左/向右/对角线）
径向梯度

线性渐变

线性渐变用于以线性格式（如从上到下）排列两种或更多种颜色。

从上到下

<html>
   <head>
      <style>
         #grad1 {
            height: 100px;
            background: -webkit-linear-gradient(pink,green);
            background: -o-linear-gradient(pink,green);
            background: -moz-linear-gradient(pink,green); 
            background: linear-gradient(pink,green); 
         }
      </style>
   </head>
   <body>
      <div id = "grad1"></div>
   </body>
</html>

左到右

<html>
   <head>
      <style>
         #grad1 {
            height: 100px;
            background: -webkit-linear-gradient(left, red , blue);
            background: -o-linear-gradient(right, red, blue); 
            background: -moz-linear-gradient(right, red, blue);
            background: linear-gradient(to right, red , blue);
         }
      </style>
   </head>
   <body>
      <div id = "grad1"></div>
   </body>
</html>

Diagonal

对角线从左上角和右上角开始。

<html>
   <head>
      <style>
         #grad1 {
            height: 100px;
            background: -webkit-linear-gradient(left top, red , blue); 
            background: -o-linear-gradient(bottom right, red, blue); 
            background: -moz-linear-gradient(bottom right, red, blue);
            background: linear-gradient(to bottom right, red , blue); 
         }
      </style>
   </head>
   <body>
      <div id = "grad1"></div>
   </body>
</html>

多色

<html>
   <head>
      <style>
         #grad2 {
            height: 100px;
            background: -webkit-linear-gradient(red, orange, yellow, red, blue, green,pink); 
            background: -o-linear-gradient(red, orange, yellow, red, blue, green,pink); 
            background: -moz-linear-gradient(red, orange, yellow, red, blue, green,pink); 
            background: linear-gradient(red, orange, yellow, red, blue, green,pink); 
         }
      </style>
   </head>
   <body>
      <div id = "grad2"></div>
   </body>
</html>

CSS3径向渐变

径向渐变出现在中心。

<html>
   <head>
      <style>
         #grad1 {
            height: 100px;
            width: 550px;
            background: -webkit-radial-gradient(red 5%, green 15%, pink 60%); 
            background: -o-radial-gradient(red 5%, green 15%, pink 60%); 
            background: -moz-radial-gradient(red 5%, green 15%, pink 60%); 
            background: radial-gradient(red 5%, green 15%, pink 60%); 
         }
      </style>
   </head>
   <body>
      <div id = "grad1"></div>
   </body>
</html>

CSS3重复径向渐变

<html>
   <head>
      <style>
         #grad1 {
            height: 100px;
            width: 550px;
            background: -webkit-repeating-radial-gradient(blue, yellow 10%, green 15%); 
            background: -o-repeating-radial-gradient(blue, yellow 10%, green 15%);
            background: -moz-repeating-radial-gradient(blue, yellow 10%, green 15%);
            background: repeating-radial-gradient(blue, yellow 10%, green 15%); 
         }
      </style>
   </head>
   <body>
      <div id = "grad1"></div>
   </body>
</html>