以下是一个简单的生日祝福HTML代码：
代码语言：javascript复制html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Happy Birthday</title>
<style type="text/css">
body {
font-family: Arial;
}
.container {
width: 300px;
padding: 16px 48px;
background-color: white;
margin: 100px auto 60px;
border: 1px solid black;
box-shadow: 8px 10px 5px #ccc;
display: flex;
justify-content: center;
align-items: center;
}
.card1 {
position: relative;
top: -32px;
left: 50%;
transform: translate(-100%);
opacity: 0;
transition: opacity 1s ease-in-out;
}
.card1:before {
content: "XXXXXX";
font-size: 36px
z-index: 2;
position: absolute;
right: 12px;
bottom: 2px;
cursor: pointer;
opacity: 1;
transition: opacity 2s ease-in-out;
}
.messageTextArea {
overfloPI / 6) * 16 - 90 20;
}
