body {
    background-color: #fff7f2;
    color: #6b4c4c;
    font-family: Georgia, serif;
    text-align: center;
  }

h1 {
    color: #b78484;
  }
.background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1;
    pointer-events: none;
}
.dollhouse {
    position: relative;
    z-index: 2;
    background-color: #fffdfb;
    width: 500px;
    margin: 50px auto;
    padding: 30px;
    border: 3px double #d8b4b4;
    border-radius: 15px;
}
.guestbook-frame {
    margin-top: 30px;
    width: 100%;
    height: 500px;
    
    border: 3px double #d8b4b4;
    border-radius: 12px;
    overflow: hidden;

    background-color: #fff8f6;
    
    box-shadow:
        inset 0 0 20px rgba(183,132,132,0.2),
        0 5px 15px rgba(120,80,80,0.15);
}

.guestbook-frame iframe {
    width: 100%;
    height: 100%;
    border: none;
}