diff --git a/css/devstyles.css b/css/devstyles.css
index 7103ecf..e8b4ed2 100644
--- a/css/devstyles.css
+++ b/css/devstyles.css
@@ -304,7 +304,6 @@ ul.t-competency-list li {
     --hlcol: color-mix(in srgb, var(--white) , var(--highlight) var(--highlight-mix));
     box-shadow: 0 0 10px 10px var(--hlcol);
     background-color: var(--hlcol);
-    margin-top: 16px;
     border-top-left-radius: 16px;
     border-top-right-radius: 16px;
 }
@@ -679,6 +678,7 @@ a.t-item-course-config {
 .s-studyline-header-period {
     text-align: center;
     padding-top: 5px;
+    margin-top: 16px; /* To allow for box shadow on highlighted period */
 }
 .s-studyline-header-period p {
     margin-bottom: 0;