【发布时间】:2015-08-22 19:40:03
【问题描述】:
如何使用伪选择器正确地为 div 设置动画,而不会使动画跳回 div 的主动画,然后播放分配给伪选择器的动画。
有问题的元素是红色圆圈,它只需要向上移动 (X) 量,而不是向后移动然后向上移动。
我为这个问题附上了小提琴和编码。
.blobs {
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
background: white;
width: 900px;
height: 200px;
margin: auto;
}
.blob {
background: grey;
width: 100px;
height: 100px;
position: absolute;
left: 50%;
top: 50%;
margin-top: -50px;
margin-left: -50px;
border-radius: 100%;
text-align: center;
line-height: 70px;
}
@keyframes blob-anim-red {
0% {
transform: translateX(0px);
}
100% {
transform: translateX(100px);
animation: forwards;
}
}
@keyframes blob-anim-blue {
0% {
transform: translateX(0px);
}
100% {
transform: translateX(200px);
}
}
@keyframes blob-anim-green {
0% {
transform: translateX(0px);
}
100% {
transform: translateX(300px);
}
}
.blob:nth-child(2) {
animation: blob-anim-red cubic-bezier(1, .01, 0, 1) 0.5s forwards alternate;
background: rgba(255, 0, 0, .3);
}
@keyframes move-up {
0% {
transform: translateY(0px);
}
100% {
transform: translateY(-10px);
}
}
.blob:nth-child(2):hover {
/*transform:translateY:(20px);*/
animation: move-up cubic-bezier(1, .01, 0, 1) 0.5s alternate;
transition: transform 0.3s, color 0.3s, background 0.3s;
color: #fff;
background: rgba(255, 0, 0, 0.8);
}
.blob:nth-child(3) {
animation: blob-anim-blue cubic-bezier(1, .01, 0, 1) 0.5s forwards alternate;
background: rgba(0, 255, 0, .3);
}
.blob:nth-child(4) {
animation: blob-anim-green cubic-bezier(1, .01, 0, 1) 0.5s forwards alternate;
background: rgba(0, 0, 255, .3);
}
.blob:first-child {
background: #ccc;
}
<body>
<div class="help"></div>
<div class="blobs">
<div class="blob">
<p>1st Child</p>
</div>
<!-- 1st child-->
<div class="blob">
<p>2nd Child</p>
</div>
<!-- 2nd child-->
<div class="blob">
<p>3rd Child</p>
</div>
<!-- 3rd child-->
<div class="blob">
<p>4th Child</p>
</div>
<!-- 4th child-->
</div>
</body>
【问题讨论】:
标签: css animation css-animations keyframe