Trilium/apps/client/src/widgets/react/Badge.css

.ext-badge {
    display: flex;
    height: 1.9em;
    align-items: center;
    justify-content: center;
    border-radius: var(--badge-radius);
    padding-inline: 8px;
    font-size: 0.75em;
    letter-spacing: .2pt;
    background-color: var(--color, transparent);
    color: white;
    min-width: 0;
    flex-shrink: 1;
    white-space: collapse;

    &.clickable,
    .dropdown-badge & {
        cursor: pointer;

        &:hover {
            background-color: color-mix(in srgb, var(--color, --badge-background-color) 80%, black);
        }
    }

    .tn-icon {
        font-size: 1.2em;
        margin-inline-end: 4px;
        opacity: .6;
    }

    a {
        color: inherit !important;
        text-decoration: none;
    }

    > * {
        display: flex;
        align-items: center;
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

.dropdown-badge {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    border-radius: var(--badge-radius);

    button,
    .btn {
        min-width: 0;
        overflow: hidden;
    }

    .ext-badge {
        border-radius: 0;

        .text {
            display: inline-flex;
            align-items: center;
            min-width: 0;

            .text-inner {
                min-width: 0;
                text-overflow: ellipsis;
                overflow: hidden;
            }

            .arrow {
                font-size: 1.3em;
                margin-inline-start: 0.25em;
                margin-inline-end: 0;
            }
        }
    }

    .btn {
        border: 0;
        margin: 0;
        padding: 0;
    }
}