packages/plugin-code-blocks/static/code-block.css
.code-block {
tab-size: 4;
background-color: var(--color-toolbar);
padding: 0.5em;
}
.code-block > p,
.code-block > summary > p {
margin: 0 0 0.25em;
display: inline-block;
font-weight: bolder;
}
details.code-block summary {
cursor: pointer;
}