* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-size: 16px;
    font-family: sans-serif;
    text-decoration: none;    
}

main {
    background-color: rgba(190, 190, 190, 0.3);
    margin: 30px 10%;
    padding: 10px 20px;
}

@media all and (max-width: 900px) {
    main {
        margin: 0;
    }
}

main h2 {
    font-size: 2.3rem;
    margin-top: 10px;
}

main h3 {
    font-size: 2rem;
}

main h4 {
    font-size: 1.6rem;
}

main h2, main h3, main h4, main h5, main p {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    margin-top: 10px;
}

main strong {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1.2rem;
    margin-top: 15px;
}

main p {
    line-height: 1.5;
    font-size: 1.1rem;
}

main ul li {
    display: list-item;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 1.1rem;
    margin-left: 20px;
}

main a {
    color: #007bff;
}

.impressum {
    padding-bottom: 30px;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.7);
}