以下是一个简单的html结婚特效的代码：
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>结婚特效</title>
<style>
body {
background-color: #ffe8e8;
}
.container {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
height: 100vh;
font-family: 'Microsoft Yahei', sans-serif;
text-align: center;
font-size: 40px;
font-weight: bold;
}
.bride, .groom {
display: inline-block;
width: 300px;
height: 300px;
margin: 50px;
border-radius: 50%;
background-position: center;
background-repeat: no-repeat;
background-size: cover;
}
.bride {
background-image: url("https://mippu.qunapu.com/upload/2023/05/20230511170844168379612423188.jpg");
}
.groom {
background-image: url("https://mippu.qunapu.com/upload/2023/05/20230511165720168379544050728.jpg");
}
.heart {
position: absolute;
top: 0;
left: 120;
width: 150px;
height: 150px;
background-image: url("https://mippu.qunapu.com/upload/2023/05/20230511165944168379558413797.jpg");
background-position: center center;
background-repeat: no-repeat;
animation: heart-beat 1s linear infinite;
}
@keyframes heart-beat {
0% { transform: scale(1.2); }
50% { transform: scale(1); }
100% { transform: scale(1.2); }
}
</style>
</head>
<body>
<div class="container">
<div class="bride"></div>
<div id="heart" class="heart"></div>
<div class="groom"></div>
<p>Happy Wedding!</p>
</div>
</body>
</html>```
代码说明：
1. 使用html和css定义了一个结婚的基本样式；
2. 分别定义新娘和新郎，并使用background-image设置其背景图；
3. 定义一个心形图案，并使用animation让其跳动。