.art-content ul li img{
    height: 1.2em;
    width: 1.2em;
    border-radius: 0.2em;
    margin-right: 0.5em;
}
.art-content ul{
    margin: 0;
    padding: 0;
}
.art-content ul li{
    list-style: none;
    margin-bottom: 0.5em;
}
.art-content ul li.engineer{
    margin-left: 2em;

}

span.show-dialog {
    cursor: pointer;
    margin-bottom: 2em;
    display: inline-block;
    color: midnightblue;
}

span.show-dialog.active::before {
    content: "-";
}
span.show-dialog::before {
    content: "+";
}


.art-video {
    margin: 1em 0;
    text-align: center;
}

.art-video video{

}