CSS mask爱心转场动画效果实例页面

CSS代码：

zxx-slide {
    display: block;
    width: 250px; height: 186px;
    position: relative;
}
.zxx-slide-a {
    position: absolute;
    display: none;
}
.zxx-slide-a.in {
    z-index: 1;
}
.zxx-slide-img {
    display: block;
    width: 250px; height: 186px;
}
.zxx-slide-index-x {
    position: absolute;
    left: 0; right: 0; bottom: 10px;
    text-align: center;
    font-size: 0;
    z-index: 1;
}
.zxx-slide-index {
    display: inline-block;
    width: 20px; height: 20px;
    padding: 0; margin: 0;
    box-sizing: border-box;
    border: 5px solid transparent;
    background-color: rgba(0,0,0,.6);
    background-clip: content-box;
    border-radius: 50%;
    transition: background-color .3s;
    cursor: pointer;
}
.zxx-slide-index.active {
    background-color: rgba(255,0,0,.9);
}
/* 动画细节在这里 */
zxx-slide .in {
    -webkit-mask: url(./heart.svg) no-repeat center;
    -webkit-mask-size: 200% 300%;
    mask: url(./heart.svg) no-repeat center;
    mask-size: 200% 300%;
    /* 动画 */
    animation: maskHeartIn 1s both;
}
@keyframes maskHeartIn {
    from {
        -webkit-mask-size: 0% 0%;
        mask-size: 0% 0%;
    }
    to {
        -webkit-mask-size: 200% 300%;
        mask-size: 200% 300%;
    }
}

HTML代码：

<zxx-slide>
    <div class="zxx-slide-x">
        <a href class="zxx-slide-a" style="display: block;"><img class="zxx-slide-img" src="./ps1.jpg"></a>
        <a href class="zxx-slide-a"><img class="zxx-slide-img" src="./ps2.jpg"></a>
        <a href class="zxx-slide-a"><img class="zxx-slide-img" src="./ps3.jpg"></a>
        <a href class="zxx-slide-a"><img class="zxx-slide-img" src="./ps4.jpg"></a>
    </div>
    <div class="zxx-slide-index-x">
        <button class="zxx-slide-index active"></button>
        <button class="zxx-slide-index"></button>
        <button class="zxx-slide-index"></button>
        <button class="zxx-slide-index"></button>
    </div>
</zxx-slide>

JS代码：

./zxx-slide-demo.js