html > body {
    display: block;
}
div.landing-main {
    container-type: inline-size;
}
a.editLandingBtn {
    display: inline-block;
    padding: 15px 30px;
    margin: 10px;
    text-decoration: none;
    font-size: 16px;
    color: #1a0dab;
    background-color: white;
    border-radius: 10px;
    border: 1px solid #e0e0e0;
    text-align: center;
    transition: background-color 0.3s, color 0.3s;
}

a.editLandingBtn:hover {
    background-color: #e0e0e0;
    color: #000;
    text-decoration: none;
}
iframe {
    display: block;
    width: 100%;
    border: 0;
    height: 100vh;
}