Which attribute in css represents radial gradient-CSS Tutorial-php.cn

The attribute representing radial gradient in css is "radial-gradient()"; the radial gradient is defined by the center point. In order to create a radial gradient, two termination colors must be set. The syntax "radial-gradient(shape size at position, starting color,..., ending color)".

Which attribute in css represents radial gradient

The operating environment of this tutorial: Windows 7 system, CSS3&&HTML5 version, Dell G3 computer.

CSS3 Radial Gradient

CSS3 Radial Gradient and Linear Gradient are very similar, let’s look at them firstSyntax:

-moz-radial-gradient([<bg-position> || <angle>,]? [<shape> || <size>,]? <color-stop>, <color-stop>[, <color-stop>]*);
-webkit-radial-gradient([<bg-position> || <angle>,]? [<shape> || <size>,]? <color-stop>, <color-stop>[, <color-stop>]*);

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In addition to the starting position, direction, and color you already see with linear gradients, radial gradients allow you to specify the shape of the gradient (circular or ellipse) and size (closest-side, closest-corner, farthest-side, farthest-corner, contain or cover). Color stops: Just like with a linear gradient, you should define the starting and ending colors of the gradient along the gradient line. In order to better understand its specific usage, we mainly compare the specific usage of CSS3 radial gradient through different examples

Example 1:

background: -moz-radial-gradient(#ace, #f96, #1E90FF);
background: -webkit-radial-gradient(#ace, #f96, #1E90FF);

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Effect:

Which attribute in css represents radial gradient

Example 2:

background: -moz-radial-gradient(#ace 5%, #f96 25%, #1E90FF 50%);
background: -webkit-radial-gradient(#ace 5%, #f96 25%, #1E90FF 50%);

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The effect is as follows:

Which attribute in css represents radial gradient

From the codes of the above two examples, we found that they start and end with the same idea, but the second example locates some data. Why does it cause such a big problem? What's the difference? In fact, although the radial gradient has the same starting and ending colors, when the position is not set, the default colors are evenly spaced. This is the same as our previous linear gradient, but if the gradient position is set, it will follow the gradient position. Gradient, this is the difference between our example one and example: although the circles have the same starting and ending colors, in example one the default color is an evenly spaced gradient, while in example two each color has a specific position.

Example 3:

background: -moz-radial-gradient(bottom left, circle, #ace, #f96, #1E90FF);
background: -webkit-radial-gradient(bottom left, circle, #ace, #f96, #1E90FF);

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The effect is as follows:

Which attribute in css represents radial gradient

Example 4:

background: -moz-radial-gradient(bottom left, ellipse, #ace, #f96, #1E90FF);
background: -webkit-radial-gradient(bottom left, ellipse, #ace, #f96, #1E90FF);

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The effect is as follows:

Which attribute in css represents radial gradient

Example 3 and Example 4 Let’s start with the effect As can be seen in the figure, their shapes are different, the example is a three-way circle and the example is a four-way elliptical shape, which means that they have differences in shape. However, when we return to the code of the two examples, it is obvious that in example three, the shape is set to circle, and in example four, ellipse, in other words, in the radial gradient, we can set its shape.

Example 5:

background: -moz-radial-gradient(ellipse closest-side, #ace, #f96 10%, #1E90FF 50%, #f96);
background: -webkit-radial-gradient(ellipse closest-side, #ace, #f96 10%, #1E90FF 50%, #f96);

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The effect is as follows:

Which attribute in css represents radial gradient

Example 6:

background: -moz-radial-gradient(ellipse farthest-corner, #ace, #f96 10%, #1E90FF 50%, #f96);
background: -webkit-radial-gradient(ellipse farthest-corner, #ace, #f96 10%, #1E90FF 50%, #f96);

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The effect is as follows:

Which attribute in css represents radial gradient

##From the code in Example 5 and Example 6 we It can be clearly seen that in example 5 I used closest-side and in example 6 we used farthest-corner. This way we know that in the radial gradient we can also set the size (Size) for it: the different options for size (closest-side, closest-corner, farthest-side, farthest-corner, contain or cover) point to the ones used to define A point the size of a circle or ellipse. Example: Near side of ellipse vs far corner The two ellipses below have different sizes. Example five is set by the distance from the starting point (center) to the near edge, while example six is set by the distance from the starting point (center) to the far corner.

Example 7:

background: -moz-radial-gradient(circle closest-side, #ace, #f96 10%, #1E90FF 50%, #f96);
background: -webkit-radial-gradient(circle closest-side, #ace, #f96 10%, #1E90FF 50%, #f96);

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The effect is as follows:

Which attribute in css represents radial gradient

示例八：

background: -moz-radial-gradient(circle farthest-side, #ace, #f96 10%, #1E90FF 50%, #f96);
background: -webkit-radial-gradient(circle farthest-side, #ace, #f96 10%, #1E90FF 50%, #f96);

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效果如下：

Which attribute in css represents radial gradient

示例七和示例八主要演示了圆的近边VS远边，示例七的圆的渐变大小由起始点(center)到近边的距离决定，而示例八的圆则有起始点到远边的距离决定。

示例九：

background: -moz-radial-gradient(#ace, #f96, #1E90FF);
background: -webkit-radial-gradient(#ace, #f96, #1E90FF);

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效果如下：

Which attribute in css represents radial gradient

示例十：

background: -moz-radial-gradient(contain, #ace, #f96, #1E90FF);
background: -webkit-radial-gradient(contain, #ace, #f96, #1E90FF);

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效果如下：

Which attribute in css represents radial gradient

示例九和示例十演示了包含圆。在这里你可以看到示例九的默认圈，同一渐变版本，但是被包含的示例十的圆。

最后我们在来看两个实例一个是应用了中心定位和full sized,如下所示：

/* Firefox 3.6+ */ 
 background: -moz-radial-gradient(circle, #ace, #f96); 
 /* Safari 4-5, Chrome 1-9 */ 
 /* Can&#39;t specify a percentage size? Laaaaaame. */ 
 background: -webkit-gradient(radial, center center, 0, center center, 460, from(#ace), to(#f96)); 
 /* Safari 5.1+, Chrome 10+ */ 
 background: -webkit-radial-gradient(circle, #ace, #f96);

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效果如下：

1Which attribute in css represents radial gradient

下面这个实例应用的是Positioned, Sized，请看代码和效果：

/* Firefox 3.6+ */ 
/* -moz-radial-gradient( [ || ,]? [ || ,]? , [, ]* ) */
background: -moz-radial-gradient(80% 20%, closest-corner, #ace, #f96); 
/* Safari 4-5, Chrome 1-9 */
background: -webkit-gradient(radial, 80% 20%, 0, 80% 40%, 100, from(#ace), to(#f96)); 
/* Safari 5.1+, Chrome 10+ */
background: -webkit-radial-gradient(80% 20%, closest-corner, #ace, #f96);

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效果如下：

1Which attribute in css represents radial gradient

到此关于 CSS3 的两种渐变方式我们都介绍完了。再浪费大家一点时间，我们看看CSS3 重复渐变（Repeating Gradient）的应用。

如果您想重复一个渐变，您可以使用-moz-repeating-linear-gradient（重复线性渐变）和-moz-repeating-radial-gradient（重复径向渐变）。在下面的例子，每个实例都指定了两个起止颜色，并无限重复。

background: -moz-repeating-radial-gradient(#ace, #ace 5px, #f96 5px, #f96 10px);
background: -webkit-repeating-radial-gradient(#ace, #ace 5px, #f96 5px, #f96 10px);
background: -moz-repeating-linear-gradient(top left -45deg, #ace, #ace 5px, #f96 5px, #f96 10px);
background: -webkit-repeating-linear-gradient(top left -45deg, #ace, #ace 5px, #f96 5px, #f96 10px);

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效果：

1Which attribute in css represents radial gradient

有关于CSS3渐变的东西就完了，大家看完了肯定会想，他主要用在哪些方面呢？这个说起来就多了，最简单的就是制作背景，我们还可以应用其制作一些漂亮的按钮，还可以用他来制作patterns，我在这里列出几种制作patterns的示例代码吧：

HTML代码：

<ul>
   <li class="gradient gradient1"></li>
   <li class="gradient gradient2"></li>
   <li class="gradient gradient3"></li>
   <li class="gradient gradient4"></li>
   <li class="gradient gradient5"></li>
   <li class="gradient gradient6"></li>
</ul>

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CSS 代码：

ul {
  overflow: hidden;
  margin-top: 20px;
}
li{
  width: 150px;
  height: 80px;
  margin-bottom: 10px;
  float: left;
  margin-right: 5px;
  background: #ace;
  /*Controls the size*/
  -webkit-background-size: 20px 20px;
  -moz-background-size: 20px 20px;
  background-size: 20px 20px;
}
     
li.gradient1 {
  background-image: -webkit-gradient(
    linear,
    0 100%, 100% 0,
    color-stop(.25, rgba(255, 255, 255, .2)),
    color-stop(.25, transparent),
    color-stop(.5, transparent),
    color-stop(.5, rgba(255, 255, 255, .2)),
    color-stop(.75, rgba(255, 255, 255, .2)),
    color-stop(.75, transparent),
    to(transparent)
    );
  background-image: -moz-linear-gradient(
    45deg,
    rgba(255, 255, 255, .2) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, .2) 50%,
    rgba(255, 255, 255, .2) 75%,
    transparent 75%,
    transparent
    );
  background-image: -o-linear-gradient(
    45deg,
    rgba(255, 255, 255, .2) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, .2) 50%,
    rgba(255, 255, 255, .2) 75%,
    transparent 75%,
    transparent
  );
  background-image: linear-gradient(
    45deg,
    rgba(255, 255, 255, .2) 25%,
    transparent 25%,
    transparent 50%,
    gba(255, 255, 255, .2) 50%,
    rgba(255, 255, 255, .2) 75%,
    transparent 75%,
    transparent
    );
}
 
li.gradient2 {
   background-image: -webkit-gradient(linear, 0 0, 100% 100%,
      color-stop(.25, rgba(255, 255, 255, .2)), color-stop(.25, transparent),
      color-stop(.5, transparent), color-stop(.5, rgba(255, 255, 255, .2)),
      color-stop(.75, rgba(255, 255, 255, .2)), color-stop(.75, transparent),
      to(transparent));
   background-image: -moz-linear-gradient(-45deg, rgba(255, 255, 255, .2) 25%, transparent 25%,
      transparent 50%, rgba(255, 255, 255, .2) 50%, rgba(255, 255, 255, .2) 75%,
      transparent 75%, transparent);
   background-image: -o-linear-gradient(-45deg, rgba(255, 255, 255, .2) 25%, transparent 25%,
      transparent 50%, rgba(255, 255, 255, .2) 50%, rgba(255, 255, 255, .2) 75%,
      transparent 75%, transparent);
   background-image: linear-gradient(-45deg, rgba(255, 255, 255, .2) 25%, transparent 25%,
      transparent 50%, rgba(255, 255, 255, .2) 50%, rgba(255, 255, 255, .2) 75%,
      transparent 75%, transparent);
}
     
li.gradient3 {
  background-image: -webkit-gradient(linear, 0 0, 0 100%, color-stop(.5, rgba(255, 255, 255, .2)), color-stop(.5, transparent), to(transparent));
  background-image: -moz-linear-gradient(rgba(255, 255, 255, .2) 50%, transparent 50%, transparent);
  background-image: -o-linear-gradient(rgba(255, 255, 255, .2) 50%, transparent 50%, transparent);
  background-image: linear-gradient(rgba(255, 255, 255, .2) 50%, transparent 50%, transparent);
}
     
li.gradient4 {
  background-image: -webkit-gradient(linear, 0 0, 100% 0, color-stop(.5, rgba(255, 255, 255, .2)), color-stop(.5, transparent), to(transparent));
  background-image: -moz-linear-gradient(0deg, rgba(255, 255, 255, .2) 50%, transparent 50%, transparent);
  background-image: -o-linear-gradient(0deg, rgba(255, 255, 255, .2) 50%, transparent 50%, transparent);
  background-image: linear-gradient(0deg, rgba(255, 255, 255, .2) 50%, transparent 50%, transparent);
}
     
li.gradient5 {
  background-image: -webkit-gradient(linear, 0 0, 100% 100%, color-stop(.25, #555), color-stop(.25, transparent), to(transparent)),
      -webkit-gradient(linear, 0 100%, 100% 0, color-stop(.25, #555), color-stop(.25, transparent), to(transparent)),
      -webkit-gradient(linear, 0 0, 100% 100%, color-stop(.75, transparent), color-stop(.75, #555)),
      -webkit-gradient(linear, 0 100%, 100% 0, color-stop(.75, transparent), color-stop(.75, #555));
  background-image: -moz-linear-gradient(45deg, #555 25%, transparent 25%, transparent),
     -moz-linear-gradient(-45deg, #555 25%, transparent 25%, transparent),
     -moz-linear-gradient(45deg, transparent 75%, #555 75%),
     -moz-linear-gradient(-45deg, transparent 75%, #555 75%);
  background-image: -o-linear-gradient(45deg, #555 25%, transparent 25%, transparent),
     -o-linear-gradient(-45deg, #555 25%, transparent 25%, transparent),
     -o-linear-gradient(45deg, transparent 75%, #555 75%),
     -o-linear-gradient(-45deg, transparent 75%, #555 75%);
  background-image: linear-gradient(45deg, #555 25%, transparent 25%, transparent),
    linear-gradient(-45deg, #555 25%, transparent 25%, transparent),
    linear-gradient(45deg, transparent 75%, #555 75%),
    linear-gradient(-45deg, transparent 75%, #555 75%);
}
     
li.gradient6 {
  background-image: -webkit-gradient(linear, 0 0, 0 100%, color-stop(.5, transparent), color-stop(.5, rgba(200, 0, 0, .5)), to(rgba(200, 0, 0, .5))),
     -webkit-gradient(linear, 0 0, 100% 0, color-stop(.5, transparent), color-stop(.5, rgba(200, 0, 0, .5)), to(rgba(200, 0, 0, .5)));
  background-image: -moz-linear-gradient(transparent 50%, rgba(200, 0, 0, .5) 50%, rgba(200, 0, 0, .5)),
     -moz-linear-gradient(0deg, transparent 50%, rgba(200, 0, 0, .5) 50%, rgba(200, 0, 0, .5));
  background-image: -o-linear-gradient(transparent 50%, rgba(200, 0, 0, .5) 50%, rgba(200, 0, 0, .5)),
     -o-linear-gradient(0deg, transparent 50%, rgba(200, 0, 0, .5) 50%, rgba(200, 0, 0, .5));
  background-image: linear-gradient(transparent 50%, rgba(200, 0, 0, .5) 50%, rgba(200, 0, 0, .5)),
     linear-gradient(0deg, transparent 50%, rgba(200, 0, 0, .5) 50%, rgba(200, 0, 0, .5));
}

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效果：

1Which attribute in css represents radial gradient

不错的效果吧，当然感兴趣的朋友可以到这里学习制作更多的不同效果。

（学习视频分享：css视频教程）

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