diff --git a/public/style.css b/public/style.css
index 8a38e0786..1b6298091 100644
--- a/public/style.css
+++ b/public/style.css
@@ -1778,6 +1778,7 @@ input[type="range"]::-webkit-slider-thumb {
     border-radius: 10px;
     line-height: var(--mainFontSize);
     font-size: var(--mainFontSize);
+    font-weight: 700;
     width: calc(var(--mainFontSize) + 0.2rem);
     height: calc(var(--mainFontSize) + 0.2rem);
     display: inline-block;