style.css.line.number-list .indent-mark .dot {
display: list-item; /* 表示する */
background-color: transparent;
}
.line.number-list .indent-mark .dot::before {
display: block;
position: absolute;
font-family: 'Font Awesome 5 Free';
font-weight: 900;
top: -11px;
content: '\f292';
font-size: 10px;
color: var(--page-text-color);
}