.BigImg{
    margin-left: auto;
    margin-right: auto;
}
.BigImg img {
    max-height: 90vh;
}
.painting-descr{
    text-align: center;
    overflow: hidden;
    padding: 0 .5em;
}
.fullres{
    margin: .5rem;
    float: right;
    font-size: smaller;
    text-decoration: underline;
}
.tabcontainer{
    width: 15rem;
    margin: auto;
}
[class^=triang-]{
    border: solid currentColor;
    border-width: 0 .25em .25em 0;
    display: inline-block;
    padding: calc(2% - .7em);
    cursor: pointer;
}
@media screen and (max-width:63.9375em) {
    [class^=triang-]{
        padding: .6em;
    }
    .BigImg img{
        max-width: 80vw;
    }

}

.triang-right {transform:rotate(-45deg);}
.triang-left {transform: rotate(135deg);}
td{
    padding:.5rem;
    border: 1px solid;
}
.tab{
    border-spacing: 0;
}
table tr:first-child td:first-child {border-top-left-radius:.25rem;}
table tr:first-child td:last-child {border-top-right-radius:.25rem;}
table tr:last-child td:first-child {border-bottom-left-radius:.25rem;}
table tr:last-child td:last-child {border-bottom-right-radius:.25rem;}