diff --git a/src/css/components/back-to-top-button.scss b/src/css/components/back-to-top-button.scss
index e47e21704..fda589b56 100644
--- a/src/css/components/back-to-top-button.scss
+++ b/src/css/components/back-to-top-button.scss
@@ -30,6 +30,7 @@
 
   &:focus {
     box-shadow: 0 0.8rem 1.6rem -0.2rem rgba(0, 32, 128, 0.15), 0 0 2px 2px #35a8ff;
+    outline-style: none;
   }
 
   &.is-visible {