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;
}

一种解决方案是使用背景位置来模拟梯度过渡。 几个月前，Twitter Bootstrap就使用了这个解决方案。

更新

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

这里有一个简单的例子:

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;
}

非常感谢

.element { 位置:相对; 宽度:200 px; 身高:150 px; 背景图像:线性梯度(45度，蓝色，水); z - index: 2; ｝ {前.element:: 位置:绝对的; 内容:“”; 插图:0;/*与{top: 0相同;右:0;底部:0;左:0;}* / 背景-图像:线性梯度(底部，红色，橙色); z - index: 1; 透明度:0; 过渡:不透明度0.25s线性; ｝ {前.element:徘徊:: 透明度:1; ｝ 身体< > < div class = "元素" > < / div > 身体< / >

渐变过渡的部分解决方法是使用嵌入框阴影——你可以转换框阴影本身，也可以转换背景颜色——例如，如果你创建的嵌入框阴影与背景颜色相同，然后在背景颜色上使用过渡，它会产生一种错觉，即普通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; 
}

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;
}

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;}