241

我正在尝试使用 css 在缩略图上进行悬停转换,以便在悬停时,背景渐变淡入。转换不起作用,但如果我只是将其更改为一个rgba()值,它就可以正常工作。不支持渐变吗?我也尝试使用图像,它也不会转换图像。

我知道这是可能的,就像在另一篇文章中那样,有人做到了,但我不知道到底是怎么回事。任何帮助>这里有一些 CSS 可以使用:

#container div a {
  -webkit-transition: background 0.2s linear;
  -moz-transition: background 0.2s linear;
  -o-transition: background 0.2s linear;
  transition: background 0.2s linear;
  position: absolute;
  width: 200px;
  height: 150px;
  border: 1px #000 solid;
  margin: 30px;
  z-index: 2
}

#container div a:hover {
  background: -webkit-gradient(radial, 100 75, 100, 100 75, 0, from(rgba(0, 0, 0, .7)), to(rgba(0, 0, 0, .4)))
}
4

18 回答 18

201

渐变还不支持过渡(尽管当前规范说它们应该通过插值支持类似渐变到类似渐变的过渡。)。

如果您想要具有背景渐变的淡入效果,则必须在容器元素上设置不透明度并“过渡”不透明度。

(有一些浏览器版本支持渐变过渡(例如 IE10。我在 2016 年在 IE 中测试了渐变过渡,它们当时似乎可以工作,但我的测试代码不再有效。)

更新:2018 年 10 月 ,具有未加前缀的新语法 [例如径向渐变(...)] 的渐变过渡现在已确认(再次?)可在 Microsoft Edge 17.17134 上使用。我不知道这是什么时候添加的。仍然无法在最新的 Firefox 和 Chrome / Windows 10 上运行。

更新:2021 年 12 月 这现在可以在最近使用 @property 解决方法的基于 Chromium 的浏览器中实现(但在 Firefox 中不起作用)。请在下面查看@mahozad 的答案。

于 2011-07-01T00:55:49.217 回答
113

一种解决方法是转换背景位置以产生渐变变化的效果: http: //sapphion.com/2011/10/css3-gradient-transition-with-background-position/

带背景位置的 CSS3 渐变过渡

虽然您不能直接使用 CSS 过渡属性为渐变设置动画,但可以通过设置 background-position 属性来实现简单的渐变动画:

代码非常简单:

#DemoGradient{  
    background: -webkit-linear-gradient(#C7D3DC,#5B798E);  
    background: -moz-linear-gradient(#C7D3DC,#5B798E);  
    background: -o-linear-gradient(#C7D3DC,#5B798E);  
    background: linear-gradient(#C7D3DC,#5B798E);  
  
    -webkit-transition: background 1s ease-out;  
    -moz-transition: background 1s ease-out;  
    -o-transition: background 1s ease-out;  
    transition: background 1s ease-out;  
  
    background-size:1px 200px;  
    border-radius: 10px;  
    border: 1px solid #839DB0;  
    cursor:pointer;  
    width: 150px;  
    height: 100px;  
}  
#DemoGradient:Hover{  
    background-position:100px;  
}  
<div id="DemoGradient"></div>  

于 2011-10-27T16:44:11.760 回答
36

一种解决方案是使用背景位置来模拟渐变过渡。 几个月前在 Twitter Bootstrap 中使用了这个解决方案。

更新

http://codersblock.blogspot.fr/2013/12/gradient-animation-trick.html?showComment=1390287622614

这是一个简单的例子:

链接状态

 .btn {
  font-family: "Helvetica Neue", Arial, sans-serif;
  font-size: 12px;
  font-weight: 300;
  position: relative;
  display: inline-block;
  text-decoration: none;
  color: #fff;
  padding: 20px 40px;
  background-image: -moz-linear-gradient(top, #50abdf, #1f78aa);
  background-image: -webkit-gradient(linear, 0 0, 0 100%, from(#50abdf), to(#1f78aa));
  background-image: -webkit-linear-gradient(top, #50abdf, #1f78aa);
  background-image: -o-linear-gradient(top, #50abdf, #1f78aa);
  background-image: linear-gradient(to bottom, #50abdf, #1f78aa);
  background-repeat: repeat-x;
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ff50abdf', endColorstr='#ff1f78aa', GradientType=0);
  background-repeat: repeat-y;
  background-size: 100% 90px;
  background-position: 0 -30px;
  -webkit-transition: all 0.2s linear;
     -moz-transition: all 0.2s linear;
       -o-transition: all 0.2s linear;
          transition: all 0.2s linear;
}

悬停状态

.btn:hover {
   background-position: 0 0;
}
于 2013-03-19T12:20:50.847 回答
22

对于它的价值,这是一个 Sass 混合:

用法:

@include gradientAnimation(red, blue, .6s);

混音:

@mixin gradientAnimation( $start, $end, $transTime ){
    background-size: 100%;
    background-image: linear-gradient($start, $end);
    position: relative;
    z-index: 100;
    &:before {
        background-image: linear-gradient($end, $start);
        content: "";
        display: block;
        height: 100%;
        position: absolute;
        top: 0; left: 0;
        opacity: 0;
        width: 100%;
        z-index: -100;
        transition: opacity $transTime;
    }
    &:hover {
        &:before {
            opacity: 1;
        }
    }
}

摘自 Dave Lunny 在 Medium 上的这篇精彩帖子:https ://medium.com/@dave_lunny/animating-css-gradients-using-only-css-d2fd7671e759

于 2018-07-09T04:54:37.353 回答
20

2021:现在可以对渐变进行动画处理(还没有 Firefox 或 Safari)

随着Chrome 85EdgeOpera添加对@property rule的支持,现在我们可以在 CSS 中执行此操作:

@property --myColor1 {
  syntax: '<color>';
  initial-value: magenta;
  inherits: false;
}

@property --myColor2 {
  syntax: '<color>';
  initial-value: green;
  inherits: false;
}

其余的是常规 CSS。
将变量设置为初始渐变颜色,并设置这些变量的过渡:

div {
  /* Optional: change initial value of the variables */
  /* --myColor1: #f64; --myColor2: brown; */

  background: linear-gradient(var(--myColor1), var(--myColor2));
  transition: --myColor1 3s, --myColor2 3s;
}

然后,根据所需的规则,为变量设置新值:

div:hover {  
  --myColor1: #f00;
  --myColor2: yellow;
}

@property --myColor1 {
  syntax: '<color>';
  initial-value: #0f0;
  inherits: false;
}

@property --myColor2 {
  syntax: '<color>';
  initial-value: rgb(40, 190, 145);
  inherits: false;
}

div {
  width: 200px;
  height: 100px;
  background: linear-gradient(var(--myColor1), var(--myColor2));
  transition: --myColor1 3s, --myColor2 3s;
}

div:hover {
  --myColor1: red;
  --myColor2: #E1AF2F;
}
<div>Hover over me</div>

请在此处查看完整的描述和示例,在此处查看@property规范
@property 规则是 CSS Houdini 技术的一部分。有关更多信息,请参阅此处此处并查看此视频

于 2020-09-11T14:17:34.073 回答
16

我知道这是个老问题,但也许有人喜欢我在纯 CSS 中的解决方案。渐变从左到右渐变。

.contener{   
  width:300px;
  height:200px;
  background-size:cover;
  border:solid 2px black;
}
.ed {
    width: 0px;
    height: 200px;
    background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.75));
    position: relative;
    opacity:0;
    transition:width 20s, opacity 0.6s;
}

.contener:hover .ed{
    width: 300px;
    background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.75));
    position: relative;
    opacity:1;
    transition:width 0.4s, opacity 1.1s;
    transition-delay: width 2s;
    
    animation-name: gradient-fade;
    animation-duration: 1.1s;   
    -webkit-animation-name: gradient-fade; /* Chrome, Safari, Opera */
    -webkit-animation-duration: 1.1s; /* Chrome, Safari, Opera */
}




/* ANIMATION */
@-webkit-keyframes gradient-fade {
    0%   {background:linear-gradient(to right, rgba(0,0,255,0), rgba(255,0,0,0));}
    2%  {background:linear-gradient(to right, rgba(0,0,255,0.01875), rgba(255,0,0,0));}
    4%  {background:linear-gradient(to right, rgba(0,0,255,0.0375), rgba(255,0,0,0.0));}
    6%  {background:linear-gradient(to right, rgba(0,0,255,0.05625), rgba(255,0,0,0.0));}
    8% {background:linear-gradient(to right, rgba(0,0,255,0.075), rgba(255,0,0,0));}
    10%  {background:linear-gradient(to right, rgba(0,0,255,0.09375), rgba(255,0,0,0));}
    12%   {background:linear-gradient(to right, rgba(0,0,255,0.1125), rgba(255,0,0,0));}
    14%  {background:linear-gradient(to right, rgba(0,0,255,0.13125), rgba(255,0,0,0));}
    16%  {background:linear-gradient(to right, rgba(0,0,255,0.15), rgba(255,0,0,0));}
    18%  {background:linear-gradient(to right, rgba(0,0,255,0.16875), rgba(255,0,0,0));}
    20% {background:linear-gradient(to right, rgba(0,0,255,0.1875), rgba(255,0,0,0));}
    22%  {background:linear-gradient(to right, rgba(0,0,255,0.20625), rgba(255,0,0,0.01875));}
    24%   {background:linear-gradient(to right, rgba(0,0,255,0.225), rgba(255,0,0,0.0375));}
    26%  {background:linear-gradient(to right, rgba(0,0,255,0.24375), rgba(255,0,0,0.05625));}
    28%  {background:linear-gradient(to right, rgba(0,0,255,0.2625), rgba(255,0,0,0.075));}
    30%  {background:linear-gradient(to right, rgba(0,0,255,0.28125), rgba(255,0,0,0.09375));}
    32% {background:linear-gradient(to right, rgba(0,0,255,0.3), rgba(255,0,0,0.1125));}
    34%  {background:linear-gradient(to right, rgba(0,0,255,0.31875), rgba(255,0,0,0.13125));}
    36%   {background:linear-gradient(to right, rgba(0,0,255,0.3375), rgba(255,0,0,0.15));}
    38%  {background:linear-gradient(to right, rgba(0,0,255,0.35625), rgba(255,0,0,0.16875));}
    40%  {background:linear-gradient(to right, rgba(0,0,255,0.375), rgba(255,0,0,0.1875));}
    42%  {background:linear-gradient(to right, rgba(0,0,255,0.39375), rgba(255,0,0,0.20625));}
    44% {background:linear-gradient(to right, rgba(0,0,255,0.4125), rgba(255,0,0,0.225));}
    46%  {background:linear-gradient(to right, rgba(0,0,255,0.43125),rgba(255,0,0,0.24375));}
    48%   {background:linear-gradient(to right, rgba(0,0,255,0.45), rgba(255,0,0,0.2625));}
    50%  {background:linear-gradient(to right, rgba(0,0,255,0.46875), rgba(255,0,0,0.28125));}
    52%  {background:linear-gradient(to right, rgba(0,0,255,0.4875), rgba(255,0,0,0.3));}
    54%   {background:linear-gradient(to right, rgba(0,0,255,0.50625), rgba(255,0,0,0.31875));}
    56%  {background:linear-gradient(to right, rgba(0,0,255,0.525), rgba(255,0,0,0.3375));}
    58%  {background:linear-gradient(to right, rgba(0,0,255,0.54375), rgba(255,0,0,0.35625));}
    60%  {background:linear-gradient(to right, rgba(0,0,255,0.5625), rgba(255,0,0,0.375));}
    62% {background:linear-gradient(to right, rgba(0,0,255,0.58125), rgba(255,0,0,0.39375));}
    64%  {background:linear-gradient(to right,rgba(0,0,255,0.6), rgba(255,0,0,0.4125));}
    66%   {background:linear-gradient(to right, rgba(0,0,255,0.61875), rgba(255,0,0,0.43125));}
    68%  {background:linear-gradient(to right, rgba(0,0,255,0.6375), rgba(255,0,0,0.45));}
    70%  {background:linear-gradient(to right, rgba(0,0,255,0.65625), rgba(255,0,0,0.46875));}
    72%  {background:linear-gradient(to right, rgba(0,0,255,0.675), rgba(255,0,0,0.4875));}
    74% {background:linear-gradient(to right, rgba(0,0,255,0.69375), rgba(255,0,0,0.50625));}
    76%  {background:linear-gradient(to right, rgba(0,0,255,0.7125), rgba(255,0,0,0.525));}
    78%   {background:linear-gradient(to right, rgba(0,0,255,0.73125),,rgba(255,0,0,0.54375));}
    80%  {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.5625));}
    82%  {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.58125));}
    84%  {background:linear-gradient(to right, rgba(0,0,255,0.75),rgba(255,0,0,0.6));}
    86% {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.61875));}
    88%  {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.6375));}
    90%   {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.65625));}
    92%  {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.675));}
    94%  {background:linear-gradient(to right, rgba(0,0,255,0.75),rgba(255,0,0,0.69375));}
    96%  {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.7125));}
    98% {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.73125),);}
    100%  {background:linear-gradient(to right, rgba(0,0,255,0.75), rgba(255,0,0,0.75));}
}
<div class="contener" style="">
  <div class="ed"></div>
</div>

于 2016-07-01T11:50:59.790 回答
9

::before,CSS 伪元素可以轻松解决问题!

您所要做的就是使用具有零透明度的::before伪元素。

:hover上,将opacity切换为 1,如果你按照几个简单的步骤,你应该可以让你的过渡工作。


.element {
  position: relative;
  width: 500px;
  height: 400px;
  background-image: linear-gradient(45deg, blue, aqua);
  z-index: 2;
}

.element::before {
  position: absolute;
  content: "";
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-image: linear-gradient(to bottom, red, orange);
  z-index: 1;
  opacity: 0;
  transition: opacity 0.4s linear;
}

.element:hover::before {
  opacity: 1;
}


  1. 定位元素并使用背景图像设置它的默认渐变
  2. 针对同一个元素,使用::before将其设置为带有背景图像的下一个渐变,并且它的不透明度为零
  3. 现在使用:hover::before并将不透明度设置为 1
  4. 回到::before块使用:
    • 绝对位置
    • 内容: ””
    • 比默认元素低的 z-index
    • top , bottom , rightleft设置为零
    • 设置针对opacity属性的过渡属性
  5. 现在一切都应该完成,您可以使用您喜欢 的任何持续时间/延迟/计时功能调整您的过渡
于 2021-02-17T04:27:47.320 回答
6

根据您问题中的css代码,我尝试了以下代码,它适用于我(运行代码片段),请自行尝试:

#container div a {
  display: inline-block;
  margin-top: 10%;
  padding: 1em 2em;
  font-size: 2em;
  color: #fff;
  font-family: arial, sans-serif;
  text-decoration: none;
  border-radius: 0.3em;
  position: relative;
  background-color: #ccc;
  background-image: linear-gradient(to top, #C0357E, #EE5840);
  -webkit-backface-visibility: hidden;
  z-index: 1;
}
     
#container div a:after {
  position: absolute;
  content: '';
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 0.3em;
  background-image: linear-gradient(to top, #6d8aa0, #343436);
  transition: opacity 0.5s ease-out;
  z-index: 2;
  opacity: 0;
}
    
#container div a:hover:after {
  opacity: 1;
}
#container div a span {
  position: relative;
  z-index: 3;
}
<div id="container"><div><a href="#"><span>Press Me</span></a></div></div>

根据您问题中的css代码,我尝试了以下代码,它适用于我,请自行尝试:

    #container div a {
  display: inline-block;
  margin-top: 10%;
  padding: 1em 2em;
  font-size: 2em;
  color: #fff;
  font-family: arial, sans-serif;
  text-decoration: none;
  border-radius: 0.3em;
  position: relative;
  background-color: #ccc;
  background-image: linear-gradient(to top, #C0357E, #EE5840);
  -webkit-backface-visibility: hidden;
  z-index: 1;
}

#container div a:after {
  position: absolute;
  content: '';
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 0.3em;
  background-image: linear-gradient(to top, #6d8aa0, #343436);
  transition: opacity 0.5s ease-out;
  z-index: 2;
  opacity: 0;
}

#container div a:hover:after {
  opacity: 1;
}
#container div a span {
  position: relative;
  z-index: 3;
}

它对你有用吗?根据您的需要更改颜色:)

于 2017-08-31T21:29:42.540 回答
5

渐变过渡的部分解决方法是使用插入框阴影 - 您可以转换框阴影本身或背景颜色 - 例如,如果您创建与背景颜色相同的插入框阴影,而不是在背景颜色上使用过渡,则会产生错觉纯背景正在变为径向渐变

.button SPAN {
    padding: 10px 30px; 
    border: 1px solid ##009CC5;

    -moz-box-shadow: inset 0 0 20px 1px #00a7d1;
    -webkit-box-shadow: inset 0 0 20px 1px#00a7d1;
    box-shadow: inset 0 0 20px 1px #00a7d1; 

    background-color: #00a7d1;
    -webkit-transition: background-color 0.5s linear;
    -moz-transition: background-color 0.5s linear;
    -o-transition: background-color 0.5s linear;
    transition: background-color 0.5s linear;
}

.button SPAN:hover {
    background-color: #00c5f7; 
}
于 2013-09-25T13:09:55.763 回答
4

在下文中,锚标签有一个子标签和一个孙子标签。孙子具有远背景渐变。近处背景中的孩子是透明的,但具有要过渡到的渐变。悬停时,孩子的不透明度在 1 秒内从 0 转变为 1。

这是CSS:

.bkgrndfar {
  position:absolute;
  top:0;
  left:0;
  z-index:-2;
  height:100%;
  width:100%;
  background:linear-gradient(#eee, #aaa);
}

.bkgrndnear {
  position:absolute;
  top:0;
  left:0;
  height:100%;
  width:100%;
  background:radial-gradient(at 50% 50%, blue 1%, aqua 100%);
  opacity:0;
  transition: opacity 1s;
}

a.menulnk {
  position:relative;
  text-decoration:none;
  color:#333;
  padding: 0 20px;
  text-align:center;
  line-height:27px;
  float:left;
}

a.menulnk:hover {
  color:#eee;
  text-decoration:underline;
}

/* This transitions child opacity on parent hover */
a.menulnk:hover .bkgrndnear {
  opacity:1;
}

而且,这是 HTML:

<a href="#" class="menulnk">Transgradient
<div class="bkgrndfar">
  <div class="bkgrndnear">
  </div>
</div>
</a>

以上仅在最新版本的 Chrome 中测试。这些是悬停前、中途悬停和完全过渡的悬停图像:

前 半 后

于 2013-07-13T22:23:07.747 回答
4

在 codepen 上找到了一个很好的 hack,它修改了opacity属性,但通过利用伪元素实现了从一个渐变到另一个渐变。他所做的是他设置了一个:after,这样当你改变实际元素的不透明度时,:after元素就会显示出来,看起来就像是一个淡入淡出。觉得分享一下会很有用。

原始代码笔: http ://codepen.io/sashtown/pen/DfdHh

.button {
  display: inline-block;
  margin-top: 10%;
  padding: 1em 2em;
  font-size: 2em;
  color: #fff;
  font-family: arial, sans-serif;
  text-decoration: none;
  border-radius: 0.3em;
  position: relative;
  background-color: #ccc;
  background-image: linear-gradient(to top, #6d8aa0, #8ba2b4);
  -webkit-backface-visibility: hidden;
  z-index: 1;
}
.button:after {
  position: absolute;
  content: '';
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 0.3em;
  background-image: linear-gradient(to top, #ca5f5e, #d68584);
  transition: opacity 0.5s ease-out;
  z-index: 2;
  opacity: 0;
}
.button:hover:after {
  opacity: 1;
}
.button span {
  position: relative;
  z-index: 3;
}
body {
  text-align: center;
  background: #ddd;
}
<a class="button" href="#"><span>BUTTON</span></a>

于 2015-03-16T16:42:47.243 回答
4

我想让一个 div 看起来像一个 3D 球体并通过颜色进行过渡。我发现渐变背景颜色(还)没有过渡。我在元素前面放置了一个径向渐变背景(使用 z-index),并带有过渡的纯色背景。

/* overlay */
z-index : 1;
background : radial-gradient( ellipse at 25% 25%, rgba( 255, 255, 255, 0 ) 0%, rgba( 0, 0, 0, 1 ) 100% );

然后是div.ball下面:

transition : all 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);

然后改变了背景颜色,div.ball瞧!

https://codepen.io/keldon/pen/dzPxZP

于 2017-07-26T10:33:36.930 回答
3

您可以使用几个堆叠渐变的不透明度中的转换来伪造渐变之间的转换,如此处的一些答案中所述:

带有渐变的 CSS3 动画

您也可以转换位置,如下所述:

带有背景位置的 CSS3 渐变过渡

这里还有一些技巧:

动画 CSS3 渐变

于 2012-09-29T03:33:07.720 回答
3

尝试使用 :before 和 :after (ie9+)

#wrapper{
    width:400px;
    height:400px;
    margin:0 auto;
    border: 1px #000 solid;
    position:relative;}
#wrapper:after,
#wrapper:before{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    content:'';
    background: #1e5799;
    background: -moz-linear-gradient(top, #1e5799 0%, #2989d8 50%, #207cca 51%, #7db9e8 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#1e5799), color-stop(50%,#2989d8), color-stop(51%,#207cca), color-stop(100%,#7db9e8));
    background: -webkit-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%);
    background: -o-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%);
    background: -ms-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%);
    background: linear-gradient(to bottom, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%);
    opacity:1;
    z-index:-1;
    -webkit-transition: all 2s ease-out;
    -moz-transition: all 2s ease-out;
    -ms-transition: all 2s ease-out;
    -o-transition: all 2s ease-out;
    transition: all 2s ease-out;
}
#wrapper:after{
    opacity:0;
    background: #87e0fd;
    background: -moz-linear-gradient(top, #87e0fd 0%, #53cbf1 40%, #05abe0 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#87e0fd), color-stop(40%,#53cbf1), color-stop(100%,#05abe0));
    background: -webkit-linear-gradient(top, #87e0fd 0%,#53cbf1 40%,#05abe0 100%);
    background: -o-linear-gradient(top, #87e0fd 0%,#53cbf1 40%,#05abe0 100%);
    background: -ms-linear-gradient(top, #87e0fd 0%,#53cbf1 40%,#05abe0 100%);
    background: linear-gradient(to bottom, #87e0fd 0%,#53cbf1 40%,#05abe0 100%);
}
#wrapper:hover:before{opacity:0;}
#wrapper:hover:after{opacity:1;}
于 2013-07-25T13:10:44.953 回答
2

发布另一个观点不会有什么坏处,因为仍然没有官方的方式来做到这一点。编写了一个轻量级的 jQuery 插件,您可以使用它定义背景径向渐变和过渡速度。然后这个基本用法会让它淡入,用 requestAnimationFrame 优化(非常流畅):

$('#element').gradientFade({

    duration: 2000,
    from: '(20,20,20,1)',
    to: '(120,120,120,0)'
});

http://codepen.io/Shikkediel/pen/xbRaZz?editors=001

保持原始背景和所有属性不变。还具有高光跟踪作为设置:

http://codepen.io/Shikkediel/pen/VYRZZY?editors=001

于 2015-01-06T00:09:00.440 回答
2

就像声明的那样。CSS 过渡目前不支持渐变。但是在某些情况下,您可以通过将其中一种颜色设置为透明来解决此问题,以便其他一些包装元素的背景色发光,然后进行过渡。

于 2012-08-06T10:38:27.623 回答
2

我在工作中使用它:) IE6+ https://gist.github.com/GrzegorzPerko/7183390

不要忘记<element class="ahover"><span>Text</span></a>是否使用文本元素。

.ahover {
    display: block;
    /** text-indent: -999em; ** if u use only only img **/
    position: relative;
}
.ahover:after {
    content: "";
    height: 100%;
    left: 0;
    opacity: 0;
    position: absolute;
    top: 0;
    transition: all 0.5s ease 0s;
    width: 100%;
    z-index: 1;
}
.ahover:hover:after {
    opacity: 1;
}
.ahover span {
    display: block;
    position: relative;
    z-index: 2;
}
于 2013-10-27T15:26:38.800 回答
0

一个更清洁的解决方案是设置背景颜色并使用蒙版图像。

#container div a {
  background-color: blue;
  transition: background 0.2s linear;
  width: 200px;
  height: 150px;
  mask-image: radial-gradient(circle at 50% 50%, rgba(0, 0, 0, .7), rgba(0, 0, 0, .4));
}

#container div a:hover { 
  background-color: red;
}
于 2022-01-07T15:35:29.600 回答