diff --git a/theme/boost/scss/moodle/forms.scss b/theme/boost/scss/moodle/forms.scss
index d96942bfbbf..84e318729f4 100644
--- a/theme/boost/scss/moodle/forms.scss
+++ b/theme/boost/scss/moodle/forms.scss
@@ -23,9 +23,6 @@
 }
 
 .mform .d-flex {
-    textarea.form-control {
-        width: 100%;
-    }
     .fitem {
         margin: 0.1rem 0.25rem 0.1rem 0 !important; /* stylelint-disable-line declaration-no-important */
     }
@@ -37,9 +34,14 @@
 }
 
 // Override the default bootstrap form-control width.
-.d-flex > .form-control {
-    width: auto;
-    max-width: 100%;
+.d-flex {
+    & > .form-control {
+        width: auto;
+        max-width: 100%;
+    }
+    & > textarea.form-control {
+        width: 100%;
+    }
 }
 
 // Override the default bootstrap custom-select width.
diff --git a/theme/boost/style/moodle.css b/theme/boost/style/moodle.css
index 3462272bdc0..7790c0099e8 100644
--- a/theme/boost/style/moodle.css
+++ b/theme/boost/style/moodle.css
@@ -32926,9 +32926,6 @@ body.path-question-type .mform fieldset.hidden {
   margin-bottom: 4px;
 }
 
-.mform .d-flex textarea.form-control {
-  width: 100%;
-}
 .mform .d-flex .fitem {
   margin: 0.1rem 0.25rem 0.1rem 0 !important; /* stylelint-disable-line declaration-no-important */
 }
@@ -32942,6 +32939,9 @@ body.path-question-type .mform fieldset.hidden {
   width: auto;
   max-width: 100%;
 }
+.d-flex > textarea.form-control {
+  width: 100%;
+}
 
 .custom-select {
   width: auto;
diff --git a/theme/classic/style/moodle.css b/theme/classic/style/moodle.css
index 066eea1f0e8..b7ff0a8d67f 100644
--- a/theme/classic/style/moodle.css
+++ b/theme/classic/style/moodle.css
@@ -32926,9 +32926,6 @@ body.path-question-type .mform fieldset.hidden {
   margin-bottom: 4px;
 }
 
-.mform .d-flex textarea.form-control {
-  width: 100%;
-}
 .mform .d-flex .fitem {
   margin: 0.1rem 0.25rem 0.1rem 0 !important; /* stylelint-disable-line declaration-no-important */
 }
@@ -32942,6 +32939,9 @@ body.path-question-type .mform fieldset.hidden {
   width: auto;
   max-width: 100%;
 }
+.d-flex > textarea.form-control {
+  width: 100%;
+}
 
 .custom-select {
   width: auto;