`CTRL+SHIFT+I` to open Obsidian's inspector.
Some CSS as an example of changes I made to bulleted list formatting:
```css
.HyperMD-list-line-1 .cm-formatting-list-ul {
padding-left: 0px;
}
.cm-formatting-list-ul.cm-list-1 span.list-bullet:after {
/*background-color: #fff;*/
}
.HyperMD-list-line-2 .cm-formatting-list-ul {
padding-left: 20px;
}
.cm-formatting-list-ul.cm-list-2 span.list-bullet:after {
background-color: #66d5ff;
}
.HyperMD-list-line-3 .cm-formatting-list-ul {
padding-left: 40px;
}
.cm-formatting-list-ul.cm-list-3 span.list-bullet:after {
background-color: #d72590;
}
.HyperMD-list-line-4 .cm-formatting-list-ul {
padding-left: 60px;
}
.cm-formatting-list-ul.cm-list-4 span.list-bullet:after {
background-color: #d72590;
}
.HyperMD-list-line-5 .cm-formatting-list-ul {
padding-left: 80px;
}
.cm-formatting-list-ul.cm-list-5 span.list-bullet:after {
/*background-color: #fff;*/
}
.cm-content div.cm-line span.cm-list-2 {
text-indent: 0px;
}
/* Adapted from Outliner plugin since it disables these styles if not using the default theme */
/* lists */
.cm-s-obsidian div.HyperMD-list-line.cm-line {
padding-top: 0.4em;
}
/* bullets */
.cm-formatting-list-ul .list-bullet {
margin-right: 0.3em;
}
.cm-formatting-list-ul .list-bullet::after {
width: 0.4em;
height: 0.4em;
background-color: var(--text-muted);
}
```
Generic Obsidian CSS tips:
https://projecteme.medium.com/how-to-customise-your-own-obsidian-css-in-3-steps-ae319e53f5d4
Multi-column layouts with CSS:
https://forum.obsidian.md/t/modular-css-layout-snippets-for-wide-views-multi-column-and-gallery/40534