子比主题：圆角炫彩滚动公告栏（黑色背景 + 炫彩文字）代码-会懂网

<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>圆角炫彩滚动公告</title>
  <style>
    /* 公告容器 —— 添加圆角 */
    .rainbow-notice {
      background-color: #000;
      padding: 12px 0;
      overflow: hidden;
      white-space: nowrap;
      position: relative;
      font-family: "Microsoft YaHei", sans-serif;
      box-shadow: 0 2px 10px rgba(0,0,0,0.5);
      border-radius: 12px; /* 👈 关键：添加圆角 */
      margin: 10px auto;   /* 可选：居中并留点外边距 */
      max-width: 90%;      /* 防止在小屏上贴边 */
    }

    /* 滚动内容 */
    .notice-content {
      display: inline-block;
      animation: scroll-left 20s linear infinite;
      padding-left: 100%;
    }

    /* 炫彩文字效果 */
    .rainbow-text {
      background: linear-gradient(
        to right,
        #ff0000, #ff8000, #ffff00, #80ff00,
        #00ff80, #00ffff, #0080ff, #8000ff,
        #ff00ff, #ff0080, #ff0000
      );
      background-size: 300% 100%;
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      animation: rainbow 4s linear infinite;
      font-weight: bold;
      font-size: 16px;
      letter-spacing: 1px;
    }

    /* 滚动动画 */
    @keyframes scroll-left {
      0% { transform: translateX(0); }
      100% { transform: translateX(-100%); }
    }

    /* 炫彩动画 */
    @keyframes rainbow {
      0% { background-position: 0% 50%; }
      100% { background-position: 300% 50%; }
    }

    /* 移动端适配 */
    @media (max-width: 768px) {
      .rainbow-notice {
        border-radius: 8px; /* 小屏稍小一点的圆角 */
        padding: 10px 0;
      }
      .rainbow-text {
        font-size: 14px;
      }
    }
  </style>
</head>
<body style="background: #f0f0f0; padding: 20px; margin: 0;">

  <!-- 圆角滚动公告 -->
  <div class="rainbow-notice">
    <div class="notice-content">
      <span class="rainbow-text">🎉 欢迎访问白川子比官方贴</span>
    </div>
  </div>


</body>
</html>

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