body {
    background-color: #000;
    background-image: url("../img/impressum.jpg");
    background-repeat: no-repeat;
    max-height: 90vh;
    background-position: center;
    font-family: 'Avenir', sans-serif;
    font-size: 16px;
}

.main {
    color: #00ef00;
    border: 1px solid #00ef00;
    padding: 30px;
    width: 400px;
    margin-left: 100px;
    margin-top: 100px;
}

hr {
    color:#00ef00;
    border: 1px solid #00ef00;
    width:50px;
    margin-bottom: 15px;
    float:left;
}

p {
    clear:both;
}

a {
    color:#00ef00;
    text-decoration: none;
}

h1{
    font-size: 16px;
}

@media (min-width:769px) {
    body {
        background-size: contain;
    }
    .main {
        color: #00ef00;
        border: 1px solid #00ef00;
        padding: 30px;
        width: 400px;
        margin-left: 100px;
        margin-top: 100px;
    }
}

@media (max-width:768px) {
    body {
        background-size: contain;
        background-position: top;
    }
    .main {
        margin-left: 30px;
        margin-top: 130px;
    }
}