Updated .gitignore; Collapse/Expand section with text

.gitignore

@@ -1 +1,3 @@
 /site/
+.DS_Store
+.venv/

docs/_assets/user.css

@@ -1,4 +1,4 @@
-:root  > * {
+:root>* {
 	--md-primary-fg-color: #435071;
 	--md-primary-fg-color--light: #575b64;
 	--md-primary-fg-color--dark: #1c1d20;
@@ -7,12 +7,15 @@
 a {
 	color: var(--md-typeset-a-color);
 }
+
 a:hover {
 	text-decoration: underline;
 }
+
 a.md-source {
 	color: white;
 }
+
 a.md-source:hover {
 	text-decoration: none;
 }
@@ -21,7 +24,7 @@ a.md-source:hover {
 	width: unset;
 }*/
 
-li.md-nav__item--section > label.md-nav__link {
+li.md-nav__item--section>label.md-nav__link {
 	font-size: large;
 }
 
@@ -39,21 +42,26 @@ li.md-nav__item--section > label.md-nav__link {
 	font-weight: bold;
 	color: #e82062 !important;
 }
+
 .md-sidebar--primary .md-nav__link--active:before {
 	content: "\21D2";
 	margin-right: 6px;
 }
 
 @media screen and (min-width: 76.3em) {
-	.md-post__back > .md-nav__title { /* Blog: Enable "Back to index" */
+	.md-post__back>.md-nav__title {
+		/* Blog: Enable "Back to index" */
 		display: block;
 	}
 }
-.md-post__back { /* Blog */
+
+.md-post__back {
+	/* Blog */
 	padding-top: 1.2rem;
 }
 
-/*.md-header,*/ .md-footer {
+/*.md-header,*/
+.md-footer {
 	background-color: #333333;
 }
 
@@ -90,6 +98,7 @@ li.md-nav__item--section > label.md-nav__link {
 	/*border-right: 1px solid #adadad;*/
 	padding-bottom: 30px;
 }
+
 .md-sidebar.md-sidebar--secondary .md-sidebar__inner {
 	border-left: 1px solid #adadad;
 }
@@ -103,7 +112,9 @@ li.md-nav__item--section > label.md-nav__link {
 	/*border-left: 1px solid #adadad;
 	border-right: 1px solid #adadad;*/
 }
-.md-content.md-content--post { /* Blog */
+
+.md-content.md-content--post {
+	/* Blog */
 	margin-top: 0px;
 }
 
@@ -134,17 +145,37 @@ ol li::marker {
 	font-weight: bold;
 }
 
+.md-typeset summary:after {
+	background-color: unset;
+	content: " Expand ▼";
+	height: unset;
+	-webkit-mask-image: unset;
+	mask-image: unset;
+	-webkit-mask-position: unset;
+	mask-position: unset;
+	-webkit-mask-repeat: unset;
+	mask-repeat: unset;
+	-webkit-mask-size: unset;
+	mask-size: unset;
+	position: absolute;
+	top: unset;
+	transform: unset;
+	transition: unset;
+	width: unset;
+}
+
+.md-typeset details[open]>summary:after {
+	transform: unset;
+	content: " Collapse ▲";
+}
+
 .md-typeset details:not([open]) {
 	border-left-width: 16px;
 }
 
-.md-typeset li p + details,
-.md-typeset li p + .admonition,
+.md-typeset li p+details,
+.md-typeset li p+.admonition,
 .md-typeset li details:only-child,
 .md-typeset li .admonition:only-child {
 	margin: 0;
 }
-
-.md-button--stretch {
-	width: 100%;
-}