在促销海报刚弹出时会抖动一两下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>金币促销活动</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
}
#promo-popup {
display: none;
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
background-color: #fff;
box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
padding: 20px;
border-radius: 10px;
z-index: 999;
}
#promo-popup img {
width: 100%;
height: auto;
border-radius: 5px;
}
#close-btn {
position: absolute;
top: 10px;
right: 10px;
cursor: pointer;
}
/* 初始状态不抖动，点击关闭按钮后再添加抖动效果 */
@keyframes shake {
0%, 100% {
transform: translate(-50%, -50%);
}
10%, 30%, 50%, 70%, 90% {
transform: translate(-50%, -50%) rotate(-5deg);
}
20%, 40%, 60%, 80% {
transform: translate(-50%, -50%) rotate(5deg);
}
}
/* 添加抖动效果的class */
.shake {
animation: shake 0.5s ease;
}
</style>
</head>
<body>
<div id="promo-popup">
<div id="close-btn" onclick="closePromoPopup()">X</div>
<img src="path/to/promo-image.jpg" alt="促销活动图片">
</div>
<script>
document.addEventListener("DOMContentLoaded", function () {
// 显示促销活动弹窗，并在一定时间后添加抖动效果
setTimeout(function () {
var promoPopup = document.getElementById("promo-popup");
promoPopup.style.display = "block";
promoPopup.classList.add("shake");
}, 3000); // 3秒后显示，你可以根据需要调整时间
// 关闭促销活动弹窗
window.closePromoPopup = function () {
var promoPopup = document.getElementById("promo-popup");
promoPopup.style.display = "none";
promoPopup.classList.remove("shake"); // 移除抖动效果
};
});
</script>
</body>
</html>
标签：动画,海报,促销,promoPopup,抖动,50%,10px,按钮,shake From： https://www.cnblogs.com/shamo89/p/18001441