span.heavy {
    position: relative;
}

span.heavy::after {
    content: ".";
    position: absolute;
    left: 0.35em;
    top: 0.25em;
}

bdo.heavy {
    position: relative;
}

bdo.heavy::after {
    content: ".";
    position: absolute;
    left: 0.35em;
    top: 0.25em;
}