Resolve #3439732 "Fix linting issues"

Closes #3439732

css/bootstrap-paragraphs-accordion.css

@@ -4,7 +4,7 @@
  *
  * Can be quickly compiled to CSS at http://lesscss.org/less-preview/.
  */
-/* Adds Accordion container.*/
+/* Adds Accordion container. */
 .paragraph--bp-accordion-container {
   padding-top: 15px;
 }
@@ -16,22 +16,22 @@
   display: block;
   padding: 10px 10px;
 }
-.paragraph.paragraph--type--bp-accordion .panel-heading a:after {
+.paragraph.paragraph--type--bp-accordion .panel-heading a::after {
   float: right;
 }
-.paragraph.paragraph--type--bp-accordion .panel-heading a[aria-expanded="false"].display:after {
+.paragraph.paragraph--type--bp-accordion .panel-heading a[aria-expanded="false"].display::after {
   content: "+";
 }
-.paragraph.paragraph--type--bp-accordion .panel-heading a[aria-expanded="true"].display:after {
+.paragraph.paragraph--type--bp-accordion .panel-heading a[aria-expanded="true"].display::after {
   content: "-";
 }
 .paragraph.paragraph--type--bp-accordion .panel-collapse > .paragraph {
-  padding-left: 15px;
   padding-right: 15px;
+  padding-left: 15px;
 }
 .paragraph.paragraph--type--bp-accordion .panel-collapse > .paragraph > .paragraph__column {
-  padding-bottom: 15px;
   padding-top: 15px;
+  padding-bottom: 15px;
 }
 .paragraph.paragraph--type--bp-accordion .panel-collapse .paragraph:last-of-type > .paragraph__column {
   padding-bottom: 15px;