Template:Update history navbox/styles.css

.bc-version-year > .mw-collapsible-toggle {
    float: none;
    display: block;
    position: static;
    text-align: center;
    margin: 0.5em auto;
}
.bc-release-group {
    border-top: 1px solid var(--bc-border, #a2a9b1);
    padding: 0.35em 0.5em;
}
.bc-release-group-label {
    font-weight: bold;
}
.bc-release-group .bc-release-group {
    margin-inline-start: 0.6em;
}
.bc-release-group ul.bc-release-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25em 0.9em;
    margin: 0.35em 0;
    list-style: none;
}