diff --git a/shared/libs/shadcn/ui/button.tsx b/shared/libs/shadcn/ui/button.tsx
new file mode 100644
index 0000000..8b0a97c
--- /dev/null
+++ b/shared/libs/shadcn/ui/button.tsx
@@ -0,0 +1,60 @@
+import * as React from "react"
+import { cva, type VariantProps } from "class-variance-authority"
+import { Slot } from "radix-ui"
+
+import { cn } from "@/shared/libs/shadcn/lib/utils"
+
+const buttonVariants = cva(
+  "focus-visible:border-ring focus-visible:ring-ring/50 aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive dark:aria-invalid:border-destructive/50 rounded-lg border border-transparent bg-clip-padding text-sm font-medium focus-visible:ring-[3px] aria-invalid:ring-[3px] [&_svg:not([class*='size-'])]:size-4 inline-flex items-center justify-center whitespace-nowrap transition-all disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none shrink-0 [&_svg]:shrink-0 outline-none group/button select-none",
+  {
+    variants: {
+      variant: {
+        default: "bg-primary text-primary-foreground [a]:hover:bg-primary/80",
+        outline: "border-border bg-background hover:bg-muted hover:text-foreground dark:bg-input/30 dark:border-input dark:hover:bg-input/50 aria-expanded:bg-muted aria-expanded:text-foreground",
+        secondary: "bg-secondary text-secondary-foreground hover:bg-secondary/80 aria-expanded:bg-secondary aria-expanded:text-secondary-foreground",
+        ghost: "hover:bg-muted hover:text-foreground dark:hover:bg-muted/50 aria-expanded:bg-muted aria-expanded:text-foreground",
+        destructive: "bg-destructive/10 hover:bg-destructive/20 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/20 text-destructive focus-visible:border-destructive/40 dark:hover:bg-destructive/30",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-8 gap-1.5 px-2.5 has-data-[icon=inline-end]:pr-2 has-data-[icon=inline-start]:pl-2",
+        xs: "h-6 gap-1 rounded-[min(var(--radius-md),10px)] px-2 text-xs in-data-[slot=button-group]:rounded-lg has-data-[icon=inline-end]:pr-1.5 has-data-[icon=inline-start]:pl-1.5 [&_svg:not([class*='size-'])]:size-3",
+        sm: "h-7 gap-1 rounded-[min(var(--radius-md),12px)] px-2.5 text-[0.8rem] in-data-[slot=button-group]:rounded-lg has-data-[icon=inline-end]:pr-1.5 has-data-[icon=inline-start]:pl-1.5 [&_svg:not([class*='size-'])]:size-3.5",
+        lg: "h-9 gap-1.5 px-2.5 has-data-[icon=inline-end]:pr-3 has-data-[icon=inline-start]:pl-3",
+        icon: "size-8",
+        "icon-xs": "size-6 rounded-[min(var(--radius-md),10px)] in-data-[slot=button-group]:rounded-lg [&_svg:not([class*='size-'])]:size-3",
+        "icon-sm": "size-7 rounded-[min(var(--radius-md),12px)] in-data-[slot=button-group]:rounded-lg",
+        "icon-lg": "size-9",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+function Button({
+  className,
+  variant = "default",
+  size = "default",
+  asChild = false,
+  ...props
+}: React.ComponentProps<"button"> &
+  VariantProps<typeof buttonVariants> & {
+    asChild?: boolean
+  }) {
+  const Comp = asChild ? Slot.Root : "button"
+
+  return (
+    <Comp
+      data-slot="button"
+      data-variant={variant}
+      data-size={size}
+      className={cn(buttonVariants({ variant, size, className }))}
+      {...props}
+    />
+  )
+}
+
+export { Button, buttonVariants }
diff --git a/shared/widgets/navbar/components/Navbar.tsx b/shared/widgets/navbar/components/Navbar.tsx
index 849081e..bb314d9 100644
--- a/shared/widgets/navbar/components/Navbar.tsx
+++ b/shared/widgets/navbar/components/Navbar.tsx
@@ -1,18 +1,24 @@
 "use client";
 import Image from "next/image";
 import NavigationLink from "./NavigationLink";
+import SignIn from "./SignIn";
 
 const Navbar = () => {
   return (
-    <div className="absolute z-10 top-0 w-full h-16 flex items-center">
-      <Image
-        src="/logo/astofo-long.png"
-        alt="Astofo Logo"
-        width={120}
-        height={0}
-        draggable={false}
-      />
-      <NavigationLink />
+    <div className="absolute z-10 top-0 w-full h-16 flex items-center justify-between">
+      <div className="flex items-center">
+        <Image
+          src="/logo/astofo-long.png"
+          alt="Astofo Logo"
+          width={120}
+          height={0}
+          draggable={false}
+        />
+        <NavigationLink />
+      </div>
+      <div>
+        <SignIn />
+      </div>
     </div>
   );
 };
diff --git a/shared/widgets/navbar/components/SignIn.tsx b/shared/widgets/navbar/components/SignIn.tsx
new file mode 100644
index 0000000..2bf9992
--- /dev/null
+++ b/shared/widgets/navbar/components/SignIn.tsx
@@ -0,0 +1,15 @@
+import { Button } from "@/shared/libs/shadcn/ui/button";
+import { LogIn } from "lucide-react";
+
+const SignIn = () => {
+  return (
+    <div>
+      <Button className="cursor-pointer">
+        <LogIn />
+        Sign In
+      </Button>
+    </div>
+  );
+};
+
+export default SignIn;