使用带有渐变背景的CSS3过渡

我试图在悬停时用css过渡缩略图，这样在悬停时，背景渐变就会淡入。转换没有工作，但如果我简单地将其更改为rgba()值，它就可以工作。不支持渐变吗?我也尝试使用图像，它也不会过渡图像。

我知道这是可能的，因为在另一篇文章中有人做到了，但我不知道具体是怎么做到的。这里有一些CSS工作:

#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)))
}

当前回答

一个更简洁的解决方案是设置背景色并使用蒙版图像。

#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;
}

2022-01-07 15:35:29

其他回答

我知道这是一个老问题，但也许有人喜欢我在纯CSS解决方案的方式。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>

2016-07-01 11:50:59

我想让div看起来像一个3D球体，并通过颜色过渡。我发现渐变背景色还不能过渡。我在元素前面放置了一个径向梯度背景(使用z-index)，并带有一个过渡的固体背景。

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

然后下面的div.ball:

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

然后改变div.ball的背景颜色，瞧!

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

2017-07-26 10:33:36

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

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

.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;
}

2013-10-27 15:26:38

一个更简洁的解决方案是设置背景色并使用蒙版图像。

#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;
}

2022-01-07 15:35:29

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;}

2013-07-25 13:10:44

使用带有渐变背景的CSS3过渡

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