diff --git a/frontend/src/components/WorkspaceChat/ChatContainer/PromptInput/index.jsx b/frontend/src/components/WorkspaceChat/ChatContainer/PromptInput/index.jsx
index 031d71ae1655222b3ac1e7251d23ce355a84bcbc..3647113b46b502c47238975d1ffce6d0952971d7 100644
--- a/frontend/src/components/WorkspaceChat/ChatContainer/PromptInput/index.jsx
+++ b/frontend/src/components/WorkspaceChat/ChatContainer/PromptInput/index.jsx
@@ -112,7 +112,7 @@ export default function PromptInput({
         className="flex flex-col gap-y-1 rounded-t-lg md:w-3/4 w-full mx-auto max-w-xl items-center"
       >
         <div className="flex items-center rounded-lg md:mb-4">
-          <div className="w-[635px] bg-main-gradient shadow-2xl border border-white/50 rounded-2xl flex flex-col px-4 overflow-hidden">
+          <div className="w-[95vw] md:w-[635px] bg-main-gradient shadow-2xl border border-white/50 rounded-2xl flex flex-col px-4 overflow-hidden">
             <AttachmentManager attachments={attachments} />
             <div className="flex items-center w-full border-b-2 border-gray-500/50">
               <textarea