Add progress bar styles

Author: FelixHenninger

library/src/starterkit/lib/lab.css

@@ -321,3 +321,20 @@ table:not(.table-plain) > tbody > tr > th {
 table.table-striped tr:nth-child(odd) td {
   background-color: var(--color-border-internal)
 }
+
+/* Progress bar */
+.progress {
+  width: 100%;
+  height: 8px;
+  overflow: hidden;
+  margin: 0.2rem 0 0.4rem;
+  border-radius: 2px;
+  border: 1px solid var(--color-border);
+}
+.progress .progress-bar {
+  width: 0%;
+  min-height: 8px;
+  background-color: var(--color-gray-background);
+  border-right: 1px solid var(--color-border-internal);
+  box-sizing: content-box;
+}