.mediathek_header{
    background-color: #ccc;
    margin-right: 16px;
    overflow: hidden;
    margin-bottom: 20px;
}

.mediathek_header a{
    color:black;
    display: block;
    padding-right: 15px;
    float:left;
    padding-left: 10px;
    text-transform: uppercase;
}

.mediathek_header a:hover{
    background-color: #000000;
    color:white;
    text-decoration: none;
}
.mediathek_header a.active{
    background-color: #000000;
    color:white;
    text-decoration: none;
}

.mediathek_element{
    /*border:1px solid green;*/
    overflow: hidden;
    width:33%;
    float:left;
    position: relative;
    margin-bottom: 10px;
    background-color: #fff;
    padding-right: 10px;
    box-sizing: border-box;
}

.mediathek_element.left{
    padding-right: 10px;
}

.mediathek_element.middle{
    padding-right: 10px;
}

.mediathek_element.right{
    padding-right: 10px;
}


.mediathek_element:before {
    content: "";
    float: left;
    padding-bottom: 100%;
}

.mediathek_element:after {
    content: "";
    display: table;
    clear: both;
}



.mediathek.pictures2cols .item.col3{
    width:100%;
}

.mediathek.pictures2cols,
.mediathek.text,
{
    padding-bottom: 66.67%;
    border: 2px solid white;
    position: relative;
}

.mediathek img{
    width: 100%;
    position: absolute;
}
.mediathek.pictures2cols .item {
    padding-bottom: 10px;
}

.mediathek.pictures2cols .item.col3.left{
    padding-right: 10px;
}


.mediathek.pictures2cols .item.col3.middle{
    padding-right: 10px;
}

.mediathek.pictures2cols .item.col3.right{
    padding-right: 10px;
}


.mediathek img{
    width:95%;
}

.mediathek.text{
   /*padding-right: 10px;*/
    box-sizing: border-box;

}

.mediathek .titletext{
    position: absolute;
    white-space: nowrap;
    overflow: hidden;
    box-sizing: border-box;
    display: block;
    bottom: 0;
    left:0;
    background-color: #fff;
    width:100%;

}

.mediathek_element .titletext_inner{
   width:90%;
    overflow: hidden;
    display: block;
}

.mediathek_element_inner{
    width:100%;
    box-sizing: border-box;
    padding-right: 10px;
    overflow: hidden;
    background-color: green;
}


@media
screen
and (max-width: 900px) {

    .mediathek_element {
        width: 90%;
    }
}


.mediathek_element iframe{
    margin-top: 15%;
}