feat: add some highlighting to markdown renderer

static/prism-twilight.css

@@ -0,0 +1,169 @@
+/**
+ * prism.js Twilight theme
+ * Based (more or less) on the Twilight theme originally of Textmate fame.
+ * @author Remy Bach
+ */
+code[class*="language-"],
+pre[class*="language-"] {
+	color: white;
+	background: none;
+	font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
+	font-size: 1em;
+	text-align: left;
+	text-shadow: 0 -.1em .2em black;
+	white-space: pre;
+	word-spacing: normal;
+	word-break: normal;
+	word-wrap: normal;
+	line-height: 1.5;
+
+	-moz-tab-size: 4;
+	-o-tab-size: 4;
+	tab-size: 4;
+
+	-webkit-hyphens: none;
+	-moz-hyphens: none;
+	-ms-hyphens: none;
+	hyphens: none;
+}
+
+pre[class*="language-"],
+:not(pre) > code[class*="language-"] {
+	background: hsl(0, 0%, 8%); /* #141414 */
+}
+
+/* Code blocks */
+pre[class*="language-"] {
+	border-radius: .5em;
+	border: .3em solid hsl(0, 0%, 33%); /* #282A2B */
+	box-shadow: 1px 1px .5em black inset;
+	margin: .5em 0;
+	overflow: auto;
+	padding: 1em;
+}
+
+pre[class*="language-"]::-moz-selection {
+	/* Firefox */
+	background: hsl(200, 4%, 16%); /* #282A2B */
+}
+
+pre[class*="language-"]::selection {
+	/* Safari */
+	background: hsl(200, 4%, 16%); /* #282A2B */
+}
+
+/* Text Selection colour */
+pre[class*="language-"]::-moz-selection, pre[class*="language-"] ::-moz-selection,
+code[class*="language-"]::-moz-selection, code[class*="language-"] ::-moz-selection {
+	text-shadow: none;
+	background: hsla(0, 0%, 93%, 0.15); /* #EDEDED */
+}
+
+pre[class*="language-"]::selection, pre[class*="language-"] ::selection,
+code[class*="language-"]::selection, code[class*="language-"] ::selection {
+	text-shadow: none;
+	background: hsla(0, 0%, 93%, 0.15); /* #EDEDED */
+}
+
+/* Inline code */
+:not(pre) > code[class*="language-"] {
+	border-radius: .3em;
+	border: .13em solid hsl(0, 0%, 33%); /* #545454 */
+	box-shadow: 1px 1px .3em -.1em black inset;
+	padding: .15em .2em .05em;
+	white-space: normal;
+}
+
+.token.comment,
+.token.prolog,
+.token.doctype,
+.token.cdata {
+	color: hsl(0, 0%, 47%); /* #777777 */
+}
+
+.token.punctuation {
+	opacity: .7;
+}
+
+.token.namespace {
+	opacity: .7;
+}
+
+.token.tag,
+.token.boolean,
+.token.number,
+.token.deleted {
+	color: hsl(14, 58%, 55%); /* #CF6A4C */
+}
+
+.token.keyword,
+.token.property,
+.token.selector,
+.token.constant,
+.token.symbol,
+.token.builtin {
+	color: hsl(53, 89%, 79%); /* #F9EE98 */
+}
+
+.token.attr-name,
+.token.attr-value,
+.token.string,
+.token.char,
+.token.operator,
+.token.entity,
+.token.url,
+.language-css .token.string,
+.style .token.string,
+.token.variable,
+.token.inserted {
+	color: hsl(76, 21%, 52%); /* #8F9D6A */
+}
+
+.token.atrule {
+	color: hsl(218, 22%, 55%); /* #7587A6 */
+}
+
+.token.regex,
+.token.important {
+	color: hsl(42, 75%, 65%); /* #E9C062 */
+}
+
+.token.important,
+.token.bold {
+	font-weight: bold;
+}
+.token.italic {
+	font-style: italic;
+}
+
+.token.entity {
+	cursor: help;
+}
+
+/* Markup */
+.language-markup .token.tag,
+.language-markup .token.attr-name,
+.language-markup .token.punctuation {
+	color: hsl(33, 33%, 52%); /* #AC885B */
+}
+
+/* Make the tokens sit above the line highlight so the colours don't look faded. */
+.token {
+	position: relative;
+	z-index: 1;
+}
+
+.line-highlight.line-highlight {
+	background: hsla(0, 0%, 33%, 0.25); /* #545454 */
+	background: linear-gradient(to right, hsla(0, 0%, 33%, .1) 70%, hsla(0, 0%, 33%, 0)); /* #545454 */
+	border-bottom: 1px dashed hsl(0, 0%, 33%); /* #545454 */
+	border-top: 1px dashed hsl(0, 0%, 33%); /* #545454 */
+	margin-top: 0.75em; /* Same as .prism’s padding-top */
+	z-index: 0;
+}
+
+.line-highlight.line-highlight:before,
+.line-highlight.line-highlight[data-end]:after {
+	background-color: hsl(215, 15%, 59%); /* #8794A6 */
+	color: hsl(24, 20%, 95%); /* #F5F2F0 */
+}