opacity: 0.8;
时间: 2024-06-17 12:02:27
浏览: 6
"opacity"是CSS[属性](https://geek.csdn.net/educolumn/5280ca4eda584c6baf7c2ec8010927f9?spm=1055.2569.3001.10083)之一,表示元素的透明度。CSS中的透明度值需要在0到1之间取值,其中0表示完全透明,1表示完全不透明。当opacity[属性](https://geek.csdn.net/educolumn/5280ca4eda584c6baf7c2ec8010927f9?spm=1055.2569.3001.10083)的值为0.8时,则表示元素的透明度为80%,即该元素的[背景](https://geek.csdn.net/educolumn/2aeebd1cb96511ab98ed3cf9d734045e?spm=1055.2569.3001.10083)和内容均能够被看到,但是该元素的[背景](https://geek.csdn.net/educolumn/2aeebd1cb96511ab98ed3cf9d734045e?spm=1055.2569.3001.10083)和内容都会被轻微地淡化。
以下是一个例子,演示如何使用opacity[属性](https://geek.csdn.net/educolumn/5280ca4eda584c6baf7c2ec8010927f9?spm=1055.2569.3001.10083)将div元素的透明度设置为80%[^1]:
```css
div {
background-color: blue;
opacity: 0.8;
```
相关问题
img{ position: absolute; /*让所有图片显示在一个位置,设置绝对位置*/ opacity: 0; animation: Aimg 12s infinite; /*设置图片轮播一次时间,以及轮播方式(无限循环)*/ @keyframes Aimg{ 0% { /*在百分之零时图片完全不可见*/ opacity: 0; opacity: 0.3; opacity: 0.5; opacity: 0.8; 4% { /*设置这些尽量让图片切换时更加流畅,不突兀*/ opacity: 1; 24% { opacity: 1; 25% { /*在此时本张图片显示结束,不透明度设置为0*/ opacity: 0; img:nth-child(0){animation-delay: 0s;}/*设置下一个子元素延迟时间*/ img:nth-child(1){animation-delay: 3s;} img:nth-child(2){animation-delay: 6s;} img:nth-child(3){animation-delay: 9s;}这段代码怎么改成类选择器
要将这段代码改成类选择器,你只需要将选择器中的 "img" 替换为你想要的类名即可。以下是修改后的代码:
```css
.my-image {
position: absolute;
opacity: 0;
animation: Aimg 12s infinite;
@keyframes Aimg {
opacity: 0;
opacity: 0.3;
opacity: 0.5;
opacity: 0.8;
opacity: 1;
24% {
opacity: 1;
25% {
opacity: 0;
.my-image:nth-child(0) {
animation-delay: 0s;
.my-image:nth-child(1) {
```
分析以下代码img { border-radius: 15%; opacity: 0.3; transition: all 0.5s ease 0s; } .cc img { opacity: 1; transition: all 0.5s ease 0s; } .l1 img { opacity: 0.8; transition: all 0.5s ease 0s; } .l2 img { opacity: 0.5; transition: all 0.5s ease 0s; }
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