chore: lint CSS files

The linter throws loads of errors - this commit only makes those
fixes that Stylelint can make automatically.

css/dev-amp-tooltips.css

@@ -26,6 +26,7 @@ span.footnote_referrer > span.footnote_tooltip {
 	visibility: hidden;
 	opacity: 0;
 	transition-property: visibility, opacity;
+
 	/*
 	transition-delay: 500ms;
 	transition-duration: 1s;
@@ -37,6 +38,7 @@ span.footnote_referrer:hover > span.footnote_tooltip {
 	visibility: visible;
 	opacity: 1;
 	transition-property: visibility, opacity;
+
 	/*
 	transition-delay: 0;
 	transition-duration: 200ms;
@@ -57,6 +59,7 @@ span.footnote_referrer:hover > span.footnote_tooltip {
 .footnote_tooltip.position {
 	display: unset;
 	position: absolute;
+
 	/*
 	bottom: 24px;
 	left: -50px;

css/dev-common.css

@@ -81,7 +81,7 @@
 	border: 4px solid red;
 	padding: 20px 40px;
 	margin: 20px 0;
-	background: #ff000055;
+	background: #f005;
 	text-align: start;
 }
 
@@ -307,12 +307,13 @@ Classes:
 	margin-bottom: 0.25em !important;
 	padding: 0 !important;
 	font-weight: normal !important;
+
 	/* bottom border optional since 2.2.5 */
 	display: block !important;
 	-webkit-margin-before: 0.83em !important;
 	-webkit-margin-after: 0.83em !important;
-	-webkit-margin-start: 0px !important;
+	-webkit-margin-start: 0 !important;
-	-webkit-margin-end: 0px !important;
+	-webkit-margin-end: 0 !important;
 	text-align: start !important;
 	vertical-align: middle;
 }
@@ -380,8 +381,8 @@ table
 	width: 1px !important;
 	white-space: nowrap !important;
 	overflow: hidden !important;
-	color: #ffffff00 !important;
+	color: #fff0 !important;
-	background-color: #ffffff00 !important;
+	background-color: #fff0 !important;
 }
 
 /**

css/dev-tooltips-alternative.css

@@ -23,6 +23,7 @@
 .footnote_tooltip.position {
 	display: unset;
 	position: absolute;
+
 	/*
 	bottom: 24px;
 	left: -50px;
@@ -43,6 +44,7 @@
 	opacity: 1;
 	transition-property: visibility, opacity;
 	transition-timing-function: linear;
+
 	/*
 	transition-delay: 0ms;
 	transition-duration: 200ms;
@@ -54,6 +56,7 @@
 	opacity: 0;
 	transition-property: visibility, opacity;
 	transition-timing-function: linear;
+
 	/*
 	transition-delay: 400ms;
 	transition-duration: 200ms;

css/settings.css

@@ -28,14 +28,17 @@
 	text-decoration: none;
 	font-weight: normal;
 }
+
 .footnotes_logo_part1_heading {
 	left: 20px;
 	color: #2bb975;
 }
+
 .footnotes_logo_part2_heading {
 	left: 51px;
 	color: #545f5a;
 }
+
 .footnotes_heart_heading {
 	color: #ff6d3b;
 	font-weight: bold;
@@ -59,6 +62,7 @@ On User Request:
 Limited to a number of IDs to not affect all dashboards
 <https://wordpress.org/support/topic/all-input-have-width-80/>
 */
+
 /*input[type=text], input[type=password], textarea, select*/
 #footnote_inputfield_readon_label,
 #footnote_inputfield_references_label,
@@ -82,6 +86,7 @@ Limited to a number of IDs to not affect all dashboards
 #footnote_inputfield_custom_mouse_over_box_excerpt_length {
 	width: 180px;
 }
+
 #footnote_inputfield_placeholder_start_user_defined,
 #footnote_inputfield_placeholder_end_user_defined {
 	width: 320px;
@@ -182,17 +187,21 @@ IE doesn’t support nth child, but these are not critical
 .expert_lookup tr td:first-child {
 	width: 170px !important;
 }
+
 .expert_lookup tr th:nth-child(2),
 .expert_lookup tr td:nth-child(2) {
 	width: 65px !important;
 }
+
 .expert_lookup tr th:nth-child(3),
 .expert_lookup tr td:nth-child(3) {
 	width: 200px !important;
 }
+
 .expert_lookup tr td:nth-child(3) input {
 	width: 190px;
 }
+
 .expert_lookup tr th:last-child,
 .expert_lookup tr td:last-child {
 	white-space: nowrap;
@@ -219,22 +228,26 @@ helping edit CSS, like tab support and syntactic colors.
 	width: 38% !important;
 	font-weight: normal !important;
 }
+
 .customize_css_new tr td:first-child span:first-child {
 	font-weight: bold !important;
 }
+
 .customize_css_new .list {
 	padding-top: 10px;
 }
+
 .customize_css_new .list p {
 	font-family: monospace;
 	padding: 0 10px;
 	text-indent: -10px;
-	margin: .5em 0;
+	margin: 0.5em 0;
 }
 
 #footnote_inputfield_custom_css_new {
 	height: 500px;
 }
+
 #footnote_inputfield_custom_css,
 #footnote_inputfield_custom_css_new {
 	width: 96%;
@@ -276,6 +289,7 @@ notice after the end of the settings box.
 .footnotes_description {
 	padding: 0 4%;
 }
+
 .footnotes_description p {
 	font-size: 1.06em;
 	font-style: italic;