FIX: slider input needs z-index for Chrome (#161)

FIX: slider input needs z-index for Chrome (#161)

diff --git a/assets/stylesheets/common/discourse-calendar.scss b/assets/stylesheets/common/discourse-calendar.scss
index b285e5d..3b524ab 100644
--- a/assets/stylesheets/common/discourse-calendar.scss
+++ b/assets/stylesheets/common/discourse-calendar.scss
@@ -272,6 +272,7 @@ a.holiday {
   position: relative;
   box-sizing: border-box;
   background-color: transparent;
+  z-index: 1;
   &::before {
     background: var(--tertiary);
     content: "";

GitHub sha: d06ed1764085fcfedddfecd872d8c49702e6ff27

This commit appears in #161 which was approved by tshenry. It was merged by awesomerobot.