obsidian.css.live-preview.list-rainbow-indents.css

/* RAINBOW INDENT COLORS */
:root {
/* default */
    --font-use-default: var(--default-font);
    --font-size-use-default: var(--editor-font-size);
    --indent-use-default: 1.8ch;
/* ------- */

/* theme */
    --font-use-theme: inherit;
    --font-size-use-theme: inherit;
    --indent-use-theme: 1.8ch;
/* ----- */

/* wide */
    --font-use-wide: monospace;
    --font-size-use-wide: 12.5px;
    --indent-use-wide: 4.0155ch;
/* ---- */

/* custom */
    --font-use-custom: Arial;
    --font-size-use-custom: 13px;
    --indent-use-custom: 14.5px;
/* ------ */

/* SET FROM VARIABLES ABOVE UPDATING LAST WORD (e.g. ...-default) */
/* Copy and replace one of following: default, theme, wide, custom */
    --rb-indent-font-family: var(--font-use-wide);
    --rb-indent-font-size: var(--font-size-use-wide);
    --rb-indent-width: var(--indent-use-wide);
    --rb-left-offset: 3px;
/* ---------------------------------------------- */

    --rb-line-width: 2px;
    --rb-color-count: 8;
    --rb-indent-1: #6854c1;
    --rb-indent-2: #c724b1;
    --rb-indent-3: #ff6900;
    --rb-indent-4: #f6be00;
    --rb-indent-5: #e4002b;
    --rb-indent-6: #97d700;
    --rb-indent-7: #00ab84;
    --rb-indent-8: #00a3e0;

    --rb-indent-bg-size: calc(var(--rb-color-count) * var(--rb-indent-width)) 1px;
    --rb-indent-rainbow-bg: linear-gradient(
        to right,
        var(--rb-indent-1) 0 var(--rb-line-width),
        transparent var(--rb-line-width) calc(1 * var(--rb-indent-width)),
        var(--rb-indent-2) calc(1 * var(--rb-indent-width)) calc(1 * var(--rb-indent-width) + var(--rb-line-width)),
        transparent calc(1 * var(--rb-indent-width) + var(--rb-line-width)) calc(2 * var(--rb-indent-width)),
        var(--rb-indent-3) calc(2 * var(--rb-indent-width)) calc(2 * var(--rb-indent-width) + var(--rb-line-width)),
        transparent calc(2 * var(--rb-indent-width) + var(--rb-line-width)) calc(3 * var(--rb-indent-width)),
        var(--rb-indent-4) calc(3 * var(--rb-indent-width)) calc(3 * var(--rb-indent-width) + var(--rb-line-width)),
        transparent calc(3 * var(--rb-indent-width) + var(--rb-line-width)) calc(4 * var(--rb-indent-width)),
        var(--rb-indent-5) calc(4 * var(--rb-indent-width)) calc(4 * var(--rb-indent-width) + var(--rb-line-width)),
        transparent calc(4 * var(--rb-indent-width) + var(--rb-line-width)) calc(5 * var(--rb-indent-width)),
        var(--rb-indent-6) calc(5 * var(--rb-indent-width)) calc(5 * var(--rb-indent-width) + var(--rb-line-width)),
        transparent calc(5 * var(--rb-indent-width) + var(--rb-line-width)) calc(6 * var(--rb-indent-width)),
        var(--rb-indent-7) calc(6 * var(--rb-indent-width)) calc(6 * var(--rb-indent-width) + var(--rb-line-width)),
        transparent calc(6 * var(--rb-indent-width) + var(--rb-line-width)) calc(7 * var(--rb-indent-width)),
        var(--rb-indent-8) calc(7 * var(--rb-indent-width)) calc(7 * var(--rb-indent-width) + var(--rb-line-width)),
        transparent calc(7 * var(--rb-indent-width) + var(--rb-line-width)) calc(8 * var(--rb-indent-width))
    );
}

.mod-cm6.is-live-preview .HyperMD-list-line.cm-line:not(.HyperMD-list-line-1) {
    overflow: hidden;
}
.mod-cm6.is-live-preview .HyperMD-list-line.cm-line .cm-hmd-list-indent {
    position: relative;
    font-family: var(--rb-indent-font-family) !important;
    font-size: var(--rb-indent-font-size) !important;
    vertical-align: top;
}
.mod-cm6.is-live-preview .HyperMD-list-line.cm-line .cm-hmd-list-indent::before {
    content: '';
    font-family: var(--rb-indent-font-family) !important;
    font-size: var(--rb-indent-font-size) !important;
    display: block;
    position: absolute;
    width: 100%;
    top: -1.6em;
    padding-bottom: 999em;
    background-image: var(--rb-indent-rainbow-bg);
    background-size: var(--rb-indent-bg-size);
    left: var(--rb-left-offset);
}

.markdown-source-view.mod-cm6.is-live-preview .HyperMD-list-line {
    padding-top: 0.15em;
    padding-bottom: 0.15em;
}

In -wide mode I get the following visual errors:

UPDATE: I figured out that those wrong extralines that are visible on the picture only appear if one or both of the sidebars are visible.

In -wide mode I get the following visual errors:

UPDATE: I figured out that those wrong extralines that are visible on the picture only appear if one or both of the sidebars are visible.

Same thing happens to me and with exactly the same behavior you describe
It would be great if someone with css skills could fix it

I am really enjoying this css snippet along with the bullet-shapes one greetings to whoever wrote it

does anyone know where to find more amazing css snippets like this?

hello, may I know is how to implement this css to my obsidian? I couldn't get it work when imported as CSS snippets

I have the same issue.