diff --git a/client/src/components/button/IconButton.style.ts b/client/src/components/button/IconButton.style.ts
index 12d4a222..940070de 100644
--- a/client/src/components/button/IconButton.style.ts
+++ b/client/src/components/button/IconButton.style.ts
@@ -3,7 +3,7 @@ import { cva } from "@styled-system/css";
 export const iconButtonContainer = cva({
   base: {
     display: "flex",
-
+    flexShrink: 1,
     justifyContent: "center",
     alignItems: "center",
     borderRadius: "xs",
diff --git a/client/src/components/button/textButton.style.ts b/client/src/components/button/textButton.style.ts
index 3098d474..f31cd317 100644
--- a/client/src/components/button/textButton.style.ts
+++ b/client/src/components/button/textButton.style.ts
@@ -9,7 +9,7 @@ const textButton = cva({
   base: {
     borderRadius: "md",
     width: "50%",
-    height: "40px",
+    paddingY: "4px",
     cursor: "pointer",
   },
   variants: {
diff --git a/client/src/components/sidebar/Sidebar.style.ts b/client/src/components/sidebar/Sidebar.style.ts
index 3dfbe9dc..c7f05736 100644
--- a/client/src/components/sidebar/Sidebar.style.ts
+++ b/client/src/components/sidebar/Sidebar.style.ts
@@ -25,6 +25,7 @@ export const plusIconBox = css({
   position: "absolute",
   bottom: "0px",
   gap: "md",
+  flexShrink: 1,
   justifyContent: "space-between",
   alignItems: "center",
   width: "100%",
diff --git a/client/src/features/auth/AuthButton.style.ts b/client/src/features/auth/AuthButton.style.ts
new file mode 100644
index 00000000..00e65f86
--- /dev/null
+++ b/client/src/features/auth/AuthButton.style.ts
@@ -0,0 +1,10 @@
+import { css } from "@styled-system/css";
+
+export const container = css({
+  display: "flex",
+  gap: "md",
+  flexGrow: 1,
+  justifyContent: "end",
+  alignItems: "center",
+  width: "auto",
+});
diff --git a/client/src/features/auth/AuthButton.tsx b/client/src/features/auth/AuthButton.tsx
index 7be702d5..8a3aadae 100644
--- a/client/src/features/auth/AuthButton.tsx
+++ b/client/src/features/auth/AuthButton.tsx
@@ -4,6 +4,7 @@ import { Modal } from "@components/modal/modal";
 import { useModal } from "@components/modal/useModal";
 import { useCheckLogin } from "@stores/useUserStore";
 import { AuthModal } from "./AuthModal";
+import { container } from "./AuthButton.style";
 
 export const AuthButton = () => {
   const isLogin = useCheckLogin();
@@ -23,13 +24,13 @@ export const AuthButton = () => {
   const { mutate: logout } = useLogoutMutation(closeLogoutModal);
 
   return (
-    <>
+    <div className={container}>
       {isLogin ? (
-        <TextButton variant="secondary" onClick={openLogoutModal}>
+        <TextButton onClick={openLogoutModal} variant="secondary">
           로그아웃
         </TextButton>
       ) : (
-        <TextButton variant="secondary" onClick={openAuthModal}>
+        <TextButton onClick={openAuthModal} variant="secondary">
           로그인
         </TextButton>
       )}
@@ -44,6 +45,6 @@ export const AuthButton = () => {
       >
         <p>로그아웃 하시겠습니까?</p>
       </Modal>
-    </>
+    </div>
   );
 };
diff --git a/client/src/features/page/Page.tsx b/client/src/features/page/Page.tsx
index fdab49e4..474f67f7 100644
--- a/client/src/features/page/Page.tsx
+++ b/client/src/features/page/Page.tsx
@@ -32,7 +32,9 @@ export const Page = ({
   handleTitleChange,
   serializedEditorData,
 }: PageProps) => {
-  const { position, size, pageDrag, pageResize, pageMinimize, pageMaximize } = usePage({ x, y });
+  const { position, size, isMaximized, pageDrag, pageResize, pageMinimize, pageMaximize } = usePage(
+    { x, y },
+  );
   const [serializedEditorDatas, setSerializedEditorDatas] =
     useState<serializedEditorDataProps | null>(serializedEditorData);
 
@@ -74,6 +76,7 @@ export const Page = ({
         <div className={pageHeader} onPointerDown={pageDrag} onClick={handlePageClick}>
           <PageTitle title={title} icon={icon} />
           <PageControlButton
+            isMaximized={isMaximized}
             onPageClose={() => handlePageClose(id)}
             onPageMaximize={pageMaximize}
             onPageMinimize={pageMinimize}
diff --git a/client/src/features/page/components/PageControlButton/PageControlButton.style.ts b/client/src/features/page/components/PageControlButton/PageControlButton.style.ts
index e064c6f8..42b79b3a 100644
--- a/client/src/features/page/components/PageControlButton/PageControlButton.style.ts
+++ b/client/src/features/page/components/PageControlButton/PageControlButton.style.ts
@@ -20,6 +20,11 @@ export const pageControlButton = cva({
     width: "20px",
     height: "20px",
     cursor: "pointer",
+    "&:disabled": {
+      background: "gray.400",
+      opacity: 0.5,
+      cursor: "not-allowed",
+    },
   },
   variants: {
     color: {
diff --git a/client/src/features/page/components/PageControlButton/PageControlButton.tsx b/client/src/features/page/components/PageControlButton/PageControlButton.tsx
index 1224e29b..50e14dd4 100644
--- a/client/src/features/page/components/PageControlButton/PageControlButton.tsx
+++ b/client/src/features/page/components/PageControlButton/PageControlButton.tsx
@@ -4,19 +4,25 @@ import MinusIcon from "@assets/icons/minus.svg?react";
 import { pageControlContainer, pageControlButton, iconBox } from "./PageControlButton.style";
 
 interface PageControlButtonProps {
+  isMaximized: boolean;
   onPageMinimize?: () => void;
   onPageMaximize?: () => void;
   onPageClose?: () => void;
 }
 
 export const PageControlButton = ({
+  isMaximized,
   onPageMinimize,
   onPageMaximize,
   onPageClose,
 }: PageControlButtonProps) => {
   return (
     <div className={pageControlContainer}>
-      <button className={pageControlButton({ color: "yellow" })} onClick={onPageMinimize}>
+      <button
+        className={pageControlButton({ color: "yellow" })}
+        onClick={onPageMinimize}
+        disabled={isMaximized}
+      >
         <MinusIcon className={iconBox} />
       </button>
       <button className={pageControlButton({ color: "green" })} onClick={onPageMaximize}>
diff --git a/client/src/features/page/hooks/usePage.ts b/client/src/features/page/hooks/usePage.ts
index b69480b3..7642a42f 100644
--- a/client/src/features/page/hooks/usePage.ts
+++ b/client/src/features/page/hooks/usePage.ts
@@ -18,42 +18,24 @@ export const DIRECTIONS = [
 
 type Direction = (typeof DIRECTIONS)[number];
 
+// 만약 maximize 상태면, 화면이 커질때도 꽉 촤게 해줘야함.
 export const usePage = ({ x, y }: Position) => {
   const [position, setPosition] = useState<Position>({ x, y });
   const [size, setSize] = useState<Size>({
     width: PAGE.WIDTH,
     height: PAGE.HEIGHT,
   });
+  const [prevPosition, setPrevPosition] = useState<Position>({ x, y });
+  const [prevSize, setPrevSize] = useState<Size>({
+    width: PAGE.WIDTH,
+    height: PAGE.HEIGHT,
+  });
 
+  const [isMaximized, setIsMaximized] = useState(false);
   const isSidebarOpen = useIsSidebarOpen();
 
   const getSidebarWidth = () => (isSidebarOpen ? SIDE_BAR.WIDTH : SIDE_BAR.MIN_WIDTH);
 
-  useEffect(() => {
-    // x 범위 넘어가면 x 위치 조정
-    const sidebarWidth = getSidebarWidth();
-    if (position.x > window.innerWidth - size.width - sidebarWidth - PADDING) {
-      // 만약 최대화 상태라면(사이드바 열었을때, 사이드바가 화면을 가린다면), 포지션 0으로 바꾸고 width도 재조정
-      // 만약 최대화가 아니라면, 포지션만 조정하고, 사이즈는 그대로
-      if (size.width > window.innerWidth - sidebarWidth - PADDING) {
-        setPosition({ x: 0, y: position.y });
-        setSize({
-          width: window.innerWidth - sidebarWidth - PADDING,
-          height: size.height,
-        });
-      } else {
-        setPosition({
-          x: position.x - sidebarWidth + PADDING,
-          y: position.y,
-        });
-        setSize({
-          width: size.width,
-          height: size.height,
-        });
-      }
-    }
-  }, [isSidebarOpen]);
-
   const pageDrag = (e: React.PointerEvent) => {
     e.preventDefault();
     const startX = e.clientX - position.x;
@@ -210,13 +192,118 @@ export const usePage = ({ x, y }: Position) => {
   };
 
   const pageMaximize = () => {
-    setPosition({ x: 0, y: 0 });
-    setSize({
-      width: window.innerWidth - getSidebarWidth() - PADDING,
-      height: window.innerHeight - PADDING,
-    });
+    if (isMaximized) {
+      // 최대화가 된 상태에서 다시 최대화 버튼을 누르면, 원래 위치, 크기로 돌아가야함.
+      setPosition(prevPosition);
+      setSize(prevSize);
+      setIsMaximized(false);
+    } else {
+      // 최대화할시, 추후 이전 상태로 돌아가기 위해 prev 위치,크기 저장
+      setPrevPosition({ ...position });
+      setPrevSize({ ...size });
+      setPosition({ x: 0, y: 0 });
+      setSize({
+        width: window.innerWidth - getSidebarWidth() - PADDING,
+        height: window.innerHeight - PADDING,
+      });
+      setIsMaximized(true);
+    }
+  };
+
+  useEffect(() => {
+    if (isMaximized) {
+      setSize({
+        width: window.innerWidth - getSidebarWidth() - PADDING,
+        height: window.innerHeight - PADDING,
+      });
+    }
+  }, [isSidebarOpen]);
+
+  const adjustPageToWindow = () => {
+    const maxWidth = window.innerWidth - getSidebarWidth() - PADDING;
+    const maxHeight = window.innerHeight - PADDING;
+
+    let newWidth = Math.min(size.width, maxWidth);
+    let newHeight = Math.min(size.height, maxHeight);
+
+    // 최소 크기 보장
+    newWidth = Math.max(PAGE.MIN_WIDTH, newWidth);
+    newHeight = Math.max(PAGE.MIN_HEIGHT, newHeight);
+
+    // 새로운 위치 계산
+    let newX = position.x;
+    let newY = position.y;
+
+    // 오른쪽 경계를 벗어나는 경우
+    if (newX + newWidth > maxWidth) {
+      newX = Math.max(0, maxWidth - newWidth);
+    }
+
+    // 아래쪽 경계를 벗어나는 경우
+    if (newY + newHeight > maxHeight) {
+      newY = Math.max(0, maxHeight - newHeight);
+    }
+
+    // 크기나 위치가 변경된 경우에만 상태 업데이트
+    if (
+      newWidth !== size.width ||
+      newHeight !== size.height ||
+      newX !== position.x ||
+      newY !== position.y
+    ) {
+      setSize({ width: newWidth, height: newHeight });
+      setPosition({ x: newX, y: newY });
+    }
   };
 
+  // maximize 상태일 때의 resize 처리
+  useEffect(() => {
+    if (!isMaximized) return;
+
+    let timeoutId: NodeJS.Timeout;
+    const handleMaximizedResize = () => {
+      clearTimeout(timeoutId);
+      timeoutId = setTimeout(() => {
+        const newWidth = window.innerWidth - getSidebarWidth() - PADDING;
+        const newHeight = window.innerHeight - PADDING;
+
+        // 실제로 크기가 변경될 때만 update
+        if (size.width !== newWidth || size.height !== newHeight) {
+          setSize({ width: newWidth, height: newHeight });
+        }
+      }, 100);
+    };
+
+    window.addEventListener("resize", handleMaximizedResize);
+    handleMaximizedResize();
+
+    return () => {
+      window.removeEventListener("resize", handleMaximizedResize);
+      clearTimeout(timeoutId);
+    };
+  }, [isMaximized, isSidebarOpen]); // maximize 상태와 sidebar 상태만 의존성
+
+  // 일반 상태일 때의 resize 처리
+  useEffect(() => {
+    if (isMaximized) return;
+
+    let timeoutId: NodeJS.Timeout;
+    const handleNormalResize = () => {
+      clearTimeout(timeoutId);
+      timeoutId = setTimeout(() => {
+        adjustPageToWindow();
+      }, 100);
+    };
+
+    window.addEventListener("resize", handleNormalResize);
+    handleNormalResize();
+
+    return () => {
+      window.removeEventListener("resize", handleNormalResize);
+      clearTimeout(timeoutId);
+    };
+  }, [position, size, isSidebarOpen]);
+
   return {
     position,
     size,
@@ -224,5 +311,6 @@ export const usePage = ({ x, y }: Position) => {
     pageResize,
     pageMinimize,
     pageMaximize,
+    isMaximized,
   };
 };
diff --git a/client/src/features/workSpace/WorkSpace.style.ts b/client/src/features/workSpace/WorkSpace.style.ts
index 85cafdf1..be7e97b7 100644
--- a/client/src/features/workSpace/WorkSpace.style.ts
+++ b/client/src/features/workSpace/WorkSpace.style.ts
@@ -8,6 +8,9 @@ export const content = css({
 export const workSpaceContainer = cva({
   base: {
     display: "flex",
+    width: "100vw",
+    height: "100vh",
+    overflow: "hidden",
     transition: "opacity 0.3s ease-in-out",
   },
   variants: {
diff --git a/client/src/features/workSpace/WorkSpace.tsx b/client/src/features/workSpace/WorkSpace.tsx
index 5a70b344..2648d428 100644
--- a/client/src/features/workSpace/WorkSpace.tsx
+++ b/client/src/features/workSpace/WorkSpace.tsx
@@ -26,7 +26,7 @@ export const WorkSpace = () => {
     closePage,
     updatePage,
     initPages,
-    initPagePosition,
+    // initPagePosition,
     openPage,
   } = usePagesManage(workspace, clientId);
   const visiblePages = pages.filter((page) => page.isVisible && page.isLoaded);
@@ -42,7 +42,7 @@ export const WorkSpace = () => {
       setWorkspace(newWorkspace);
 
       initPages(newWorkspace.pageList);
-      initPagePosition();
+      // initPagePosition();
     }
   }, [workspaceMetadata]);
 
diff --git a/client/src/features/workSpace/hooks/usePagesManage.ts b/client/src/features/workSpace/hooks/usePagesManage.ts
index 9aeec259..07e1f289 100644
--- a/client/src/features/workSpace/hooks/usePagesManage.ts
+++ b/client/src/features/workSpace/hooks/usePagesManage.ts
@@ -212,17 +212,6 @@ export const usePagesManage = (workspace: WorkSpace | null, clientId: number | n
     }
   };
 
-  // 서버에서 처음 불러올때는 좌표를 모르기에, 초기화 과정 필요
-  const initPagePosition = () => {
-    setPages((prevPages) =>
-      prevPages.map((page, index) => ({
-        ...page,
-        x: PAGE_OFFSET * index,
-        y: PAGE_OFFSET * index,
-      })),
-    );
-  };
-
   const initPages = (list: CRDTPage[]) => {
     const pageList: Page[] = list.map(
       (crdtPage, index) =>
@@ -244,7 +233,6 @@ export const usePagesManage = (workspace: WorkSpace | null, clientId: number | n
 
   useEffect(() => {
     initPages([]);
-    initPagePosition();
   }, []);
 
   return {
@@ -256,6 +244,5 @@ export const usePagesManage = (workspace: WorkSpace | null, clientId: number | n
     updatePageData,
     updatePage,
     initPages,
-    initPagePosition,
   };
 };
diff --git a/client/src/styles/global.ts b/client/src/styles/global.ts
index 75c7ee1d..2c9f0784 100644
--- a/client/src/styles/global.ts
+++ b/client/src/styles/global.ts
@@ -12,6 +12,7 @@ export const globalStyles = defineGlobalStyles({
     backgroundImage: 'url("./assets/images/background.png")',
     backgroundSize: "cover",
     fontFamily: "Pretendard, sans-serif",
+    boxSizing: "border-box",
   },
   // 스크롤바 전체
   "::-webkit-scrollbar": {