<!DOCTYPE html>

<html lang="ja">

<head>

  <meta charset="UTF-8">

  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <title>LP</title>


  <style>

    html, body {

      margin: 0;

      padding: 0;

      width: 100%;

      height: 100%;

      overflow: hidden;

    }


    /* 背景動画 */

    .bg-video {

      position: fixed;

      top: 0;

      left: 0;

      width: 100vw;

      height: 100vh;

      object-fit: cover;

      z-index: -1;

    }


    /* 前面コンテンツ */

    .overlay {

      position: relative;

      z-index: 10;

      width: 100%;

      height: 100%;

      display: flex;

      align-items: center;

      justify-content: center;

    }


    .btn {

      padding: 18px 32px;

      font-size: 18px;

      background: rgba(0,0,0,0.7);

      color: #fff;

      text-decoration: none;

      border-radius: 8px;

    }

  </style>

</head>

<body>


  <video class="bg-video" autoplay muted loop playsinline>

    <source src="bg.mp4" type="video/mp4">

  </video>


  <div class="overlay">

    <a href="https://example.com" class="btn">こちらをタップ</a>

  </div>


</body>

</html>