diff --git a/site/src/components/Header.astro b/site/src/components/Header.astro
index 2e16b34..2bbdbce 100644
--- a/site/src/components/Header.astro
+++ b/site/src/components/Header.astro
@@ -69,6 +69,7 @@ import { Icon } from 'astro-icon/components'
       transition: border-color var(--animation-speed-fast) var(--cubic-bezier);
       cursor: pointer;
       margin: 0;
+      outline: none;
       border: 1px solid var(--border-color);
       border-radius: 6px;
       background: transparent;
@@ -84,6 +85,10 @@ import { Icon } from 'astro-icon/components'
         color: var(--accent-color);
       }
 
+      &:focus-visible {
+        box-shadow: 0 0 0 2px color-mix(in oklch, var(--accent-color) 35%, transparent);
+      }
+
       .icon-light,
       .icon-dark {
         justify-content: center;