diff --git a/app/javascript/flavours/glitch/styles/forms.scss b/app/javascript/flavours/glitch/styles/forms.scss
index 84a87eb86..ef0ca1fcd 100644
--- a/app/javascript/flavours/glitch/styles/forms.scss
+++ b/app/javascript/flavours/glitch/styles/forms.scss
@@ -395,6 +395,7 @@ code {
   input[type=email],
   input[type=password],
   input[type=url],
+  input[type=datetime-local],
   textarea {
     box-sizing: border-box;
     font-size: 16px;
@@ -435,7 +436,8 @@ code {
   input[type=text],
   input[type=number],
   input[type=email],
-  input[type=password] {
+  input[type=password],
+  input[type=datetime-local] {
     &:focus:invalid:not(:placeholder-shown),
     &:required:invalid:not(:placeholder-shown) {
       border-color: lighten($error-red, 12%);
@@ -451,6 +453,7 @@ code {
     input[type=number],
     input[type=email],
     input[type=password],
+    input[type=datetime-local],
     textarea,
     select {
       border-color: lighten($error-red, 12%);