<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width,initial-scale=1.0" /> <title>爱心~</title> <style> /* 原有样式保持不变 */ html,body{ height:100%;margin:0;overflow:hidden; font-family:"微软雅黑",system-ui,-apple-system,Segoe UI,Roboto,sans-serif; background: radial-gradient(1200px 600px at 50% 45%, rgba(255,255,255,.65), rgba(255,255,255,0) 60%), radial-gradient(circle at 50% 45%, #fff4f7 0%, #c9eaff 100%); } .st
代码问题分析 你提供的代码没有完整闭合，`.replay` 类的样式定义没有结束。在 `background` 属性之后缺少右括号和分号，并且 HTML 部分也没有闭合的 `</html>` 标签。 修正后的代码 ```html <!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width,initial-scale=1.0" /> <title>爱心~</title> <style> /* 原有样式保持不变 */ html,body{ height:100%; margin:0; overflow:hidden; font-family:"微软雅黑",system-ui,-apple-system,Segoe UI,Roboto,sans-serif; background: radial-gradient(1200px 600px at 50% 45%, rgba(255,255,255,.65), rgba(255,255,255,0) 60%), radial-gradient(circle at 50% 45%, #fff4f7 0%, #c9eaff 100%); } .stage{ position:relative; width:100%; height:100%; } .msg{ position:absolute; left:50%; top:50%; padding:10px 16px; border-radius:16px; color:#fff; font-weight:700; font-size:clamp(14px,3vmin,22px); text-shadow:0 2px 8px rgba(0,0,0,.28); opacity:0; transform: translate(-50%,-50%) translate(var(--dx),var(--dy)) scale(.75) rotate(var(--rot)); animation: flight var(--dur) cubic-bezier(.25,.7,.3,1) var(--delay) both; box-shadow:0 8px 26px rgba(0,0,0,.22); will-change: transform, opacity; background: var(--bg); } @keyframes flight{ 0%{ opacity:0; transform:translate(-50%,-50%) translate(var(--dx),var(--dy)) scale(.75) rotate(var(--rot)); } 18%{ opacity:1; } 45%{ transform:translate(-50%,-50%) translate(calc(var(--dx)*.2),calc(var(--dy)*.2)) scale(1.06); } 70%{ transform:translate(-50%,-50%) translate(calc(var(--dx)*1.15),calc(var(--dy)*1.15)) scale(.95) rotate(var(--rot)); } 88%{ transform:translate(-50%,-50%) translate(calc(var(--heart-x)*.6),calc(var(--heart-y)*.6)) scale(.9) rotate(var(--heart-rot)); } 100%{ opacity:1; transform:translate(-50%,-50%) translate(var(--heart-x),var(--heart-y)) scale(1) rotate(var(--heart-rot)); } } .msg::before,.msg::after{ content:''; position:absolute; left:50%; top:0; background:inherit; border-radius:50px 50px 0 0; width:22px; height:34px; opacity:0; transition:opacity .28s ease; transform-origin:0 100%; transform:rotate(-45deg); } .msg::after{ left:0; transform-origin:100% 100%; transform:rotate(45deg); } .msg.heart-mode{ color:transparent; text-shadow:none; } .msg.heart-mode::before,.msg.heart-mode::after{ opacity:1; } .msg.locked{ animation:none; transform:translate(-50%,-50%) translate(var(--heart-x),var(--heart-y)) scale(1) rotate(var(--heart-rot)); opacity:1; } .msg.locked.pulse{ animation:pulse 2.2s ease-in-out 1; } @keyframes pulse{ 0%,100%{ transform:translate(-50%,-50%) translate(var(--heart-x),var(--heart-y)) scale(1); } 50%{ transform:translate(-50%,-50%) translate(var(--heart-x),var(--heart-y)) scale(1.08); } } .msg.burst{ animation: burst 1.4s cubic-bezier(.17,.6,.2,1) forwards; } @keyframes burst{ 0%{ opacity:1; transform:translate(-50%,-50%) translate(var(--heart-x),var(--heart-y)) scale(1); filter:blur(0); } 70%{ opacity:.9; transform: translate(-50%,-50%) translate(calc(var(--heart-x) + var(--bx)*0.7), calc(var(--heart-y) + var(--by)*0.7)) scale(.9) rotate(var(--rot)); filter:blur(.3px); } 100%{ opacity:0; transform: translate(-50%,-50%) translate(calc(var(--heart-x) + var(--bx)), calc(var(--heart-y) + var(--by))) scale(.7) rotate(var(--rot)); filter:blur(1px); } } .center-title{ position:absolute; left:50%; top:50%; transform:translate(-50%,-50%); font-weight:800; letter-spacing:.12em; font-size:clamp(18px,4vmin,28px); color:rgba(255,105,180,.6); text-shadow:0 2px 10px rgba(255,105,180,.15); opacity:.0; pointer-events:none; animation:titleIn 1.2s ease 0.8s both; } @keyframes titleIn{ from{ opacity:0; transform:translate(-50%,-55%); } to{ opacity:.95; transform:translate(-50%,-50%); } } .replay{ position:absolute; right:18px; bottom:18px; padding:10px 14px; border:none; border-radius:10px; background:rgb(255, 255, 255); /* 这里补充完整颜色 */ color: #333; cursor: pointer; } </style> </head> <body> <div class="stage"> <!-- 这里可以添加具体的消息元素 --> <div class="center-title">爱心动画</div> <button class="replay">重播</button> </div> </body> </html> ``` 需要小心的地方 我在以往的开发过程中，碰到过以下几点需要格外小心处理的地方： 1. CSS 动画的关键帧定义中，确保每个关键帧的属性值设置正确，特别是涉及到 `transform` 和 `opacity` 等属性的变化，否则可能会导致动画效果不符合预期。 2. 对于使用 CSS 变量（如 `--dx`, `--dy` 等）的情况，要确保在 JavaScript 或者 HTML 中正确设置这些变量的值，否则动画可能无法正常工作。 3. 在设置元素的 `position` 属性时，要注意父元素和子元素的相对定位关系，避免出现元素位置错乱的问题。 [2025-11-02 23:37:54 | AI写代码神器 | 1993点数解答]
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