我有一个动画,你可以在这里看到:http://codepen.io/bchrisman/pen/OMKJNm
动画:
@keyframes fadingText {
0% {
opacity: 0;
}
12% {
opacity: 1;
}
24% {
opacity: 0;
}
100% {
opacity: 0;
}
}
我的问题在于对这个div的定位
div[id^="txtAni"] {
top: 2px;
position: absolute;
}
当我使用position: relative
时,它们都堆叠在一起,这是一团糟。静态不是真的可用,等等......
我的问题是,如何才能正确地实现相同的动画,但是能够正确地将动画文本空间化,以使其在空间中居中?我不想在左边硬编码:#px用于每个单独的文本,因为最终文本可能会改变,动画需要考虑到这一点。
另请注意,我不希望使用Javascript或jQuery作为我的解决方案。
提前谢谢!
答案 0 :(得分:1)
你应该使用em
值代替px来调整你的动画框大小(里面的文字可以通过缩放或丢失字体调整大小)。
vertical-align
top
或bottom
可能比middle
更有效。您也可以通过height
设置line-height:Xem;
一行(该框也是如此)。
可以在div
...
relative
@-webkit-keyframes fadingText {
0% {
opacity: 0;
}
12% {
opacity: 1;
}
24% {
opacity: 0;
}
100% {
opacity: 0;
}
}
@keyframes fadingText {
0% {
opacity: 0;
}
12% {
opacity: 1;
}
24% {
opacity: 0;
}
100% {
opacity: 0;
}
}
body {
background: #333;
color: #fff;
font-size: 2em;
}
div {
display: inline-block;
vertical-align: middle;
}
.animate {
display: inline-block;
overflow: hidden;
position: relative;
width: 3.5em;/* make sure it holds the longest word */
vertical-align: top;
text-align:center;
}
div[id^="txtAni"] {
bottom:0;
position: absolute;
vertical-align:top;
left:0;
right:0;
}
div[id^="txtAni"]:first-of-type { /* useless since animate got a width set */
position:relative;
color:red;
}
#wrapper {
border:solid 1px #0f0;
box-sizing: border-box;
overflow: hidden;
height: 60px;
padding: 4px;
position: relative;
line-height:1.4em;
}
.fadeIn1 {
-webkit-animation: fadingText 7.5s ease-in-out;
animation: fadingText 7.5s ease-in-out;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
-webkit-animation-iteration-count: infinite;
animation-iteration-count: infinite;
}
.fadeIn2 {
-webkit-animation: fadingText 7.5s ease-in-out 1.5s;
animation: fadingText 7.5s ease-in-out 1.5s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
-webkit-animation-iteration-count: infinite;
animation-iteration-count: infinite;
}
.fadeIn3 {
-webkit-animation: fadingText 7.5s ease-in-out 3s;
animation: fadingText 7.5s ease-in-out 3s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
-webkit-animation-iteration-count: infinite;
animation-iteration-count: infinite;
}
.fadeIn4 {
-webkit-animation: fadingText 7.5s ease-in-out 4.5s;
animation: fadingText 7.5s ease-in-out 4.5s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
-webkit-animation-iteration-count: infinite;
animation-iteration-count: infinite;
}
.fadeIn5 {
-webkit-animation: fadingText 7.5s ease-in-out 6s;
animation: fadingText 7.5s ease-in-out 6s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
-webkit-animation-iteration-count: infinite;
animation-iteration-count: infinite;
}
<!DOCTYPE html>
<html>
<head></head>
<body>
<div id="wrapper">
<div id="inner">here's some
<div class="animate">
<div id="txtAniText" class="fadeIn1">Content</div>
<div id="txtAniVideo" class="fadeIn2">Videos</div>
<div id="txtAniAnimation" class="fadeIn3">Music</div>
<div id="txtAniStuff" class="fadeIn4">Books</div>
<div id="txtAniStuff" class="fadeIn5">Articles</div>
</div>
</div>
<div>yada yada yada</div>
</div>
</body>
</html>
如果您为添加的文字提供背景或不同的颜色,长度的差异将不会太多。 http://codepen.io/gc-nomade/pen/RaRVrX