diff --git a/.changeset/famous-eels-trade.md b/.changeset/famous-eels-trade.md
new file mode 100644
index 000000000000..2c3d24898746
--- /dev/null
+++ b/.changeset/famous-eels-trade.md
@@ -0,0 +1,5 @@
+---
+'astro': patch
+---
+
+Ensure the dev-overlay-window is anchored to the bottom
diff --git a/packages/astro/src/runtime/client/dev-overlay/ui-library/window.ts b/packages/astro/src/runtime/client/dev-overlay/ui-library/window.ts
index 2421632ae2ec..2f5357a50767 100644
--- a/packages/astro/src/runtime/client/dev-overlay/ui-library/window.ts
+++ b/packages/astro/src/runtime/client/dev-overlay/ui-library/window.ts
@@ -23,7 +23,8 @@ export class DevOverlayWindow extends HTMLElement {
 					color: rgba(204, 206, 216, 1);
 					position: fixed;
 					z-index: 999999999;
-					top: 55%;
+					/* -7.5em is a magic number that seems to keep it anchored with the dev bar */
+					bottom: calc(7.5% + -150px);
 					left: 50%;
 					transform: translate(-50%, -50%);
 					box-shadow: 0px 0px 0px 0px rgba(19, 21, 26, 0.30), 0px 1px 2px 0px rgba(19, 21, 26, 0.29), 0px 4px 4px 0px rgba(19, 21, 26, 0.26), 0px 10px 6px 0px rgba(19, 21, 26, 0.15), 0px 17px 7px 0px rgba(19, 21, 26, 0.04), 0px 26px 7px 0px rgba(19, 21, 26, 0.01);