h1{
    text-align: center;
}

h2{
    text-align: center;
}
h2::first-line{
    font-weight: normal;
}

section.art{
    font-size: 12pt;
    margin: 1em;
}
section.art > h3{
    display: inline;
    font-size: 12pt;
}
section ul{
    margin-top: 0;
    margin-bottom: 0;
    margin-left: 2em;
    list-style: none;
    padding-left: 0.5em;
    display: block;
    text-indent: 0;
    text-align: unset;
}
section ul>li{
    padding-left: 0.5em;
    margin-bottom: 0.25em;
}

h3 + .ust{
    display: inline;
}

.ust {
    display: block;
    text-indent: 4ch;
    margin: .5em 0 .5em .5em ;
}

blockquote{
    display: block;
    width: stretch;
    border: 1mm dashed #ae0000;
    margin: 0.25em;
    padding: 0.5em;

}

@keyframes highlight{
    from{
        background-color: unset;
    }
    to{
        background-color: yellow;
    }
}

.highlight{
    animation-duration:0.5s;
    animation-name: highlight;
    background-color: yellow;
    padding: 0.5em;
}