.modalbox {
    position: absolute;
    z-index: 20;
    display: none;
    width: 50%;
    top: 0;
    margin-left: 14em;
}

.modalbox:target { display: block; }

.inhalt {
    position: relative;
    z-index: 20;
    font-size: 0.875em;
    background-color: #FFFFFF;
    border: 0.25em solid #DE9479;
    border-radius: 0.625em;
    margin-top: 4.375em;
    padding: 0.3125em 0.3125em;
}

.modalbox h2 {
    display: inline-block;
    width: 100%;
    background: linear-gradient(#a0d8ec,#55B9DD);
    border-radius: 0.375em 0.375em 0 0;
    font-size: 1.25em;
    font-weight: normal;
    text-align: center;
}

.modalbox h3 {
    font-size: 1em;
}

.modalbox a {
    color: #B97850;
    text-decoration:none;
    float: right;
    padding: 0em 0.625em;
}

.modalbox a:focus, .modalbox a:hover {
    color: #FFFFFF;
    background-color: #757575;
}

.modalbox .overlay {
    position: fixed;
    background-color: rgba(0,0,0,0.3);
    height: 100vh;
    width: 100vw;
    top: 0;
    left: 0;
    z-index: 10;
}

@media only screen and (max-width: 38em) {
    .modalbox {
        margin-left: 130px;
        width: 60%;
    }
    .modalbox h2 { font-size: 1em; font-weight: bold; }
    .inhalt { font-size: 0.75em; }
}

@media only screen and (max-width: 28em) {
    .modalbox {
        margin-left: 100px;
        width: 60%;
    }
}