#modalContainer {
    background-color: rgba(0, 0, 0, 0.7);
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    left: 0px;
    z-index: 10000;
    background-image: url(tp.png); /* required by MSIE to prevent actions on lower z-index elements */
}

#alertBox {
    position: relative;
    width: 33%;
    min-height: 100px;
    /*max-height: 400px;*/
    margin-top: 50px;
    border: 1px solid #fff;
    background-color: #fff;
    background-repeat: no-repeat;
    top: 30%;
}

#modalContainer > #alertBox {
    position: fixed;
}

#alertBox h1 {
    
    margin: 0;
    font: bold 1em Raleway,arial;
    background-color: #c39fc5;
    color: #FFF;
    border-bottom: 1px solid #86278b;
    padding: 10px 0 10px 5px;
}

#alertBox::content {
    content: 'HINWEIS vom System';
    font-size: larger;
}

#alertBox p {
    padding-left: 5px;
    padding-top: 30px;
    text-align: center;
    vertical-align: middle;
}

#alertBox #closeBtn {
    display: block;
    position: relative;
    margin: 30px auto 10px auto;
    padding: 7px;
    border: 0 none;
    width: 70px;
    text-transform: uppercase;
    text-align: center;
    color: #FFF;
    background-color: #86278b;
    border-radius: 0px;
    text-decoration: none;
    outline: 0 !important;
}


.important {
    background-color: #F5FCC8;
    padding: 2px;
}

@media (max-width: 600px) {
    #alertBox {
        position: relative;
        width: 90%;
        top: 30%;
    }
}