diff --git a/src/css/form.css b/src/css/form.css
index 1d5a2401..1dd6c52d 100755
--- a/src/css/form.css
+++ b/src/css/form.css
@@ -1308,7 +1308,7 @@ input[type="range"]:disabled::-moz-range-progress {
   border-radius: var(--theme-radius);
   padding: 0.5em 0;
   position: absolute;
-  top: 100%;
+  top: calc(100% + calc(var(--layout-line-width) * 2));
   left: 0;
   width: 100%;
   min-width: 12em;