标签：box linear 效果 100% transform height 跑马灯 background CSS
盒子区域
创建一个大盒子，用来装我们的广告语，还有跑马灯的四个小盒子
<div class="box">
<div></div>
<div></div>
<div></div>
<div></div>
创意广告
</div>
设置box样式
* {
padding: 0;
margin: 0;
}
body {
background-color: black;
}
.box {
width: 100px;
height: 50px;
background-color: transparent;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
text-align: center;
line-height: 50px;
font-size: 18px;
font-family: '宋体';
color: rgb(99, 225, 247);
overflow: hidden;
}
设置灯光效果
先设置第一个元素的渐变效果，我们这里设置的是顶部的灯光效果，这里我们使用
left的属性，设置这个盒子的位置；使用
width:100%，使得这个盒子的宽度与大盒子保持一致。
.box :nth-child(1) {
background: linear-gradient(to right, transparent, #0FF);
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 2px;
}
第二个子元素
.box :nth-child(2) {
position: absolute;
background: linear-gradient(to bottom, transparent, #0FF);
top: 0;
right: 0;
width: 2px;
height: 100%;
}
第三个子元素
.box :nth-child(3) {
position: absolute;
bottom: 0;
left: 0;
height: 2px;
width: 100%;
background: linear-gradient(to left, transparent, #0FF);
}
第四个子元素
.box :nth-child(4) {
background: linear-gradient(to top, transparent, #0FF);
position: absolute;
bottom: 0;
left: 0;
width: 2px;
height: 100%;
}
设置动画效果
我们使用@keyframe属性为我们的灯光添加动画效果
@keyframes run1 {
0% {
transform: translateX(-100px);
}
100% {
transform: translateX(100px);
}
}
给盒子加上动画
.box :nth-child(1) {
background: linear-gradient(to right, transparent, #0FF);
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 2px;
animation: run1 1s linear infinite;
}
可以设置延迟使效果更加好看，每个盒子比前一个盒子多整体代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>跑马灯效果</title>
</head>
<body>
<div class="box">
<div></div>
<div></div>
<div></div>
<div></div>
创意广告
</div>
</body>
</html>
<style>
* {
padding: 0;
margin: 0;
}
body {
background-color: black;
}
.box {
width: 100px;
height: 50px;
background-color: transparent;
position: absolute;
top: 50%;
transform: translate(-50%, -50%);
left: 50%;
text-align: center;
line-height: 50px;
font-size: 18px;
font-family: '宋体';
color: rgb(99, 225, 247);
overflow: hidden;
}
.box :nth-child(1) {
background: linear-gradient(to right, transparent, #0FF);
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 2px;
animation: run1 1s linear infinite;
}
.box :nth-child(2) {
position: absolute;
background: linear-gradient(to bottom, transparent, #0FF);
top: 0;
right: 0;
width: 2px;
height: 100%;
animation: run2 1s linear infinite;
animation-delay: .5s;
}
.box :nth-child(3) {
position: absolute;
bottom: 0;
left: 0;
height: 2px;
width: 100%;
background: linear-gradient(to left, transparent, #0FF);
animation: run3 1s linear infinite;
animation-delay: 1s;
}
.box :nth-child(4) {
background: linear-gradient(to top, transparent, #0FF);
position: absolute;
bottom: 0;
left: 0;
width: 2px;
height: 100%;
animation: run4 1s linear infinite;
animation-delay: 1.5s;
}
@keyframes run1 {
0% {
transform: translateX(-100px);
}
100% {
transform: translateX(100px);
}
}
@keyframes run2 {
0% {
transform: translateY(-50px);
}
100% {
transform: translateY(50px);
}
}
@keyframes run3 {
0% {
transform: translateX(100px);
}
100% {
transform: translateX(-100px);
}
}
@keyframes run4 {
0% {
transform: translateY(50px);
}
100% {
transform: translateY(-50px);
}
}
</style>
效果图
标签：box,
linear,
效果,
100%,
transform,
height,
跑马灯,
background,
CSS
From： https://www.cnblogs.com/happy-p/p/17241158.html