只是想知道是否有一个纯 css 的解决方案/技巧来避免绝对元素与下面的内容重叠。
我已经了解到 position absolute 从布局中取出元素,因此不可能为父元素提供其绝对子元素的高度。 也许你们知道解决方法。
感谢您的时间和想法
/*Sentence*/
.sentence{
color: #222;
font-size: 50px;
}
/*FadeIn*/
.fadeIn{
display: inline;
text-indent: 8px;
}
.fadeIn span{
animation: fadeEffect 12.5s linear infinite 0s;
-ms-animation: fadeEffect 12.5s linear infinite 0s;
-webkit-animation: fadeEffect 12.5s linear infinite 0s;
color: #00abe9;
opacity: 0;
overflow: hidden;
position: absolute;
}
.fadeIn span:nth-child(2){
animation-delay: 2.5s;
-ms-animation-delay: 2.5s;
-webkit-animation-delay: 2.5s;
}
.fadeIn span:nth-child(3){
animation-delay: 5s;
-ms-animation-delay: 5s;
-webkit-animation-delay: 5s;
}
.fadeIn span:nth-child(4){
animation-delay: 7.5s;
-ms-animation-delay: 7.5s;
-webkit-animation-delay: 7.5s;
}
.fadeIn span:nth-child(5){
animation-delay: 10s;
-ms-animation-delay: 10s;
-webkit-animation-delay: 10s;
}
/*FadeIn Animation*/
@-moz-keyframes fadeEffect{
0% { opacity: 0; }
5% { opacity: 0; -moz-transform: translateY(0px); }
10% { opacity: 1; -moz-transform: translateY(0px); }
25% { opacity: 1; -moz-transform: translateY(0px); }
30% { opacity: 0; -moz-transform: translateY(0px); }
80% { opacity: 0; }
100% { opacity: 0; }
}
@-webkit-keyframes fadeEffect{
0% { opacity: 0; }
5% { opacity: 0; -webkit-transform: translateY(0px); }
10% { opacity: 1; -webkit-transform: translateY(0px); }
25% { opacity: 1; -webkit-transform: translateY(0px); }
30% { opacity: 0; -webkit-transform: translateY(0px); }
80% { opacity: 0; }
100% { opacity: 0; }
}
@-ms-keyframes fadeEffect{
0% { opacity: 0; }
5% { opacity: 0; -ms-transform: translateY(0px); }
10% { opacity: 1; -ms-transform: translateY(0px); }
25% { opacity: 1; -ms-transform: translateY(0px); }
30% { opacity: 0; -ms-transform: translateY(0px); }
80% { opacity: 0; }
100% { opacity: 0; }
}
<body>
<h2 class="sentence">
<div class="fadeIn">
<span>Handsome.</span>
<span>Clean.</span>
<span>Elegant.</span>
<span>Magnificent.</span>
<span>Adorable.</span>
</div>
</h2>
<h2>LOrem iaoeg egaa eg aeg aeg aegoaegaokeg aeogk aeogkae gok </h2>
</body>
只要我添加一个字母,它就会起作用。那么也许添加一个伪元素是一种解决方案?
/*Sentence*/
.sentence{
color: #222;
font-size: 50px;
}
/*FadeIn*/
.fadeIn{
display: inline;
text-indent: 8px;
}
.fadeIn span{
animation: fadeEffect 12.5s linear infinite 0s;
-ms-animation: fadeEffect 12.5s linear infinite 0s;
-webkit-animation: fadeEffect 12.5s linear infinite 0s;
color: #00abe9;
opacity: 0;
overflow: hidden;
position: absolute;
}
.fadeIn span:nth-child(2){
animation-delay: 2.5s;
-ms-animation-delay: 2.5s;
-webkit-animation-delay: 2.5s;
}
.fadeIn span:nth-child(3){
animation-delay: 5s;
-ms-animation-delay: 5s;
-webkit-animation-delay: 5s;
}
.fadeIn span:nth-child(4){
animation-delay: 7.5s;
-ms-animation-delay: 7.5s;
-webkit-animation-delay: 7.5s;
}
.fadeIn span:nth-child(5){
animation-delay: 10s;
-ms-animation-delay: 10s;
-webkit-animation-delay: 10s;
}
/*FadeIn Animation*/
@-moz-keyframes fadeEffect{
0% { opacity: 0; }
5% { opacity: 0; -moz-transform: translateY(0px); }
10% { opacity: 1; -moz-transform: translateY(0px); }
25% { opacity: 1; -moz-transform: translateY(0px); }
30% { opacity: 0; -moz-transform: translateY(0px); }
80% { opacity: 0; }
100% { opacity: 0; }
}
@-webkit-keyframes fadeEffect{
0% { opacity: 0; }
5% { opacity: 0; -webkit-transform: translateY(0px); }
10% { opacity: 1; -webkit-transform: translateY(0px); }
25% { opacity: 1; -webkit-transform: translateY(0px); }
30% { opacity: 0; -webkit-transform: translateY(0px); }
80% { opacity: 0; }
100% { opacity: 0; }
}
@-ms-keyframes fadeEffect{
0% { opacity: 0; }
5% { opacity: 0; -ms-transform: translateY(0px); }
10% { opacity: 1; -ms-transform: translateY(0px); }
25% { opacity: 1; -ms-transform: translateY(0px); }
30% { opacity: 0; -ms-transform: translateY(0px); }
80% { opacity: 0; }
100% { opacity: 0; }
}
<body>
<h2 class="sentence">A
<div class="fadeIn">
<span>Handsome.</span>
<span>Clean.</span>
<span>Elegant.</span>
<span>Magnificent.</span>
<span>Adorable.</span>
</div>
</h2>
<h2>LOrem iaoeg egaa eg aeg aeg aegoaegaokeg aeogk aeogkae gok </h2>
</body>
最佳答案
问题是,.fadeIn
元素现在没有非绝对子元素,所以基本上它的高度为 0,因为绝对元素不会根据其父元素的高度进行计算。
因此,您唯一需要做的就是为 .fadeIn
元素提供适当的 height
。
有很多方法可以解决这个问题,但我为您制作了这个。我要使 .fadeIn
元素内的 span
的 :first-child
为 position: static
(默认位置值)让其父知道它应该占用多少高度
。
另一种方法是为您的 .fadeIn
元素设置 height: 50px
(例如),让该元素知道它的高度应该是多少。
另一种方法(正如您已经提到的)是让另一个 child (在您的示例中是一个A)让它知道高度值。
还有更多方法。
但我采用了第一个解决方案(根据该上下文进行了一些其他更改以确保一切正常工作)。看下面的代码:
/*Sentence*/
.sentence{
color: #222;
font-size: 50px;
}
.fadeIn { position: relative; }
.fadeIn span{
animation: fadeEffect 12.5s linear infinite 0s;
-ms-animation: fadeEffect 12.5s linear infinite 0s;
-webkit-animation: fadeEffect 12.5s linear infinite 0s;
color: #00abe9;
opacity: 0;
top: 0;
overflow: hidden;
position: absolute;
}
.fadeIn span:first-child { position: static; display: block }
.fadeIn span:nth-child(2){
animation-delay: 2.5s;
-ms-animation-delay: 2.5s;
-webkit-animation-delay: 2.5s;
}
.fadeIn span:nth-child(3){
animation-delay: 5s;
-ms-animation-delay: 5s;
-webkit-animation-delay: 5s;
}
.fadeIn span:nth-child(4){
animation-delay: 7.5s;
-ms-animation-delay: 7.5s;
-webkit-animation-delay: 7.5s;
}
.fadeIn span:nth-child(5){
animation-delay: 10s;
-ms-animation-delay: 10s;
-webkit-animation-delay: 10s;
}
/*FadeIn Animation*/
@-moz-keyframes fadeEffect{
0% { opacity: 0; }
5% { opacity: 0; -moz-transform: translateY(0px); }
10% { opacity: 1; -moz-transform: translateY(0px); }
25% { opacity: 1; -moz-transform: translateY(0px); }
30% { opacity: 0; -moz-transform: translateY(0px); }
80% { opacity: 0; }
100% { opacity: 0; }
}
@-webkit-keyframes fadeEffect{
0% { opacity: 0; }
5% { opacity: 0; -webkit-transform: translateY(0px); }
10% { opacity: 1; -webkit-transform: translateY(0px); }
25% { opacity: 1; -webkit-transform: translateY(0px); }
30% { opacity: 0; -webkit-transform: translateY(0px); }
80% { opacity: 0; }
100% { opacity: 0; }
}
@-ms-keyframes fadeEffect{
0% { opacity: 0; }
5% { opacity: 0; -ms-transform: translateY(0px); }
10% { opacity: 1; -ms-transform: translateY(0px); }
25% { opacity: 1; -ms-transform: translateY(0px); }
30% { opacity: 0; -ms-transform: translateY(0px); }
80% { opacity: 0; }
100% { opacity: 0; }
}
<body>
<h2 class="sentence">
<div class="fadeIn">
<span>Handsome.</span>
<span>Clean.</span>
<span>Elegant.</span>
<span>Magnificent.</span>
<span>Adorable.</span>
</div>
</h2>
<h2>LOrem iaoeg egaa eg aeg aeg aegoaegaokeg aeogk aeogkae gok </h2>
</body>
关于css - 相对 parent ,绝对 child ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54707160/