diff --git a/public/css/create_thread.css b/public/css/create_thread.css
index b8fda87..3f0c175 100644
--- a/public/css/create_thread.css
+++ b/public/css/create_thread.css
@@ -17,7 +17,7 @@ form {
   display: block;
   font-weight: 600;
   color: #4c4c4c;
-  width: 500px;
+  width: 100%;
   margin-bottom: 10px;
   border: 2px solid #d9d9d9;
-}
\ No newline at end of file
+}