html, body {
      margin: 0;
      padding: 0;
      height: 100%;
      overflow: hidden; /* bloque le scroll */
    }

    #main-content {
      padding: 20px;
      filter: none; /* important pour ne pas flouter à la base */
    }

    /* Overlay bloquant transparent */
    #adblock-popup {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background-color: rgba(0, 0, 0, 0.6); /* fond sombre semi-transparent */
      z-index: 9998;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    #adblock-popup p {
      background: #ffffff;
      color: #000000;
      padding: 30px 40px;
      border-radius: 10px;
      font-size: 20px;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
      max-width: 90%;
      text-align: center;
    }
<!-- Banner de consentement RGPD avec blocage -->
  #cookie-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.95);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    font-family: sans-serif;
    padding: 20px;
  }

  #cookie-banner {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.2);
    max-width: 400px;
  }

  #cookie-banner button {
    margin: 10px;
    padding: 10px 20px;
    font-size: 14px;
    cursor: pointer;
  }