diff --git a/docs/_static/css/custom.css b/docs/_static/css/custom.css
new file mode 100644
index 000000000..4e72cecdb
--- /dev/null
+++ b/docs/_static/css/custom.css
@@ -0,0 +1,33 @@
+/* Improve spacing */
+.version-switcher__container.dropdown {
+    margin-left: 10px;
+}
+
+button.btn.version-switcher__button {
+    margin-bottom: 0px;
+}
+
+/* Show on hover */
+.version-switcher__container.dropdown:hover .dropdown-menu {
+    display: block;
+    left: 0;
+    margin-top: var(--bs-dropdown-spacer);
+    top: 100%;
+}
+
+.dropdown-menu.show {
+    display: none;
+}
+
+/* Remove underline and borders */
+button.btn.version-switcher__button:hover {
+    text-decoration: none;
+}
+
+.version-switcher__menu a.list-group-item {
+    border: none !important;
+}
+
+.version-switcher__menu a.list-group-item:hover {
+    text-decoration: none !important;
+}
diff --git a/docs/conf.py b/docs/conf.py
index 52a59ff6f..5067e13b6 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -45,9 +45,9 @@
 ]
 
 # These paths are either relative to html_static_path or fully qualified paths (eg. https://...)
-# html_css_files = [
-#     "css/custom.css",
-# ]
+html_css_files = [
+    "css/custom.css",
+]
 
 linkcheck_anchors = False
 
@@ -85,6 +85,7 @@
 version_match = os.environ.get("READTHEDOCS_VERSION")
 with open("../package.json") as f:
     release = json.load(f)["version"]
+
 # If READTHEDOCS_VERSION doesn't exist, we're not on RTD
 # If it is an integer, we're in a PR build and the version isn't correct.
 # If it's "latest" → change to "dev" (that's what we want the switcher to call it)
@@ -144,3 +145,6 @@ def _correct_signatures(app, what, name, obj, options, signature, return_annotat
 
 def setup(app):  # This makes the data-interfaces signatures display on the docs/api, they don't otherwise
     app.connect("autodoc-process-signature", _correct_signatures)
+
+    # Add custom CSS
+    app.add_css_file("css/custom.css")