CSS3 - 渐变

什么是渐变？

渐变显示两种或多种颜色的组合，如下所示 -

渐变类型

线性渐变（下/上/左/右/对角线）
径向渐变

线性渐变

线性渐变用于以线性格式（如从上到下）排列两种或多种颜色。

从上到下

现场演示

<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>

它将产生以下结果 -

左到右

现场演示

<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>

它将产生以下结果 -

对角线

对角线从左上角和右上角的按钮开始。

现场演示

<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>

它将产生以下结果 -

多色的

现场演示

<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>

它将产生以下结果 -

CSS3 径向渐变

径向渐变出现在中心。

现场演示

<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>

它将产生以下结果 -

CSS3 重复径向渐变

现场演示

<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>

它将产生以下结果 -