pre {
    max-width: 800px;
    margin: auto;
}

.separator {
    display: flex;
    align-items: center;
    text-align: center;
}

.separator::before,
.separator::after {
    content: "";
    flex: 1;
    border-bottom: 1px solid var(--color-hr);
}

.separator:not(:empty)::before {
    margin-right: 0.25em;
}

.separator:not(:empty)::after {
    margin-left: 0.25em;
}