nav header { padding: 1.5rem; display: flex; justify-content: center;}
nav header a { width: 40%;}
nav header a img { width: 100%;}
nav header .menu_btn { width: fit-content; margin: 0 0 0 auto; position: absolute; right: 1.5rem; top: 1.5rem;}
nav header .menu_btn img { width: 2.5rem; filter: brightness(0.3);}

nav .menu_page { display: none; position: fixed; width: 100vw; height: 100vh; background: #fff; top: 0; left:0; z-index: 9999;}
nav .menu_page .top { text-align: center;padding: 1.5rem; }
nav .menu_page .top .logo {}
nav .menu_page .top .logo img { width: 40%;}
nav .menu_page .top .close_btn { position: absolute; right: 1.5rem; top: 1.5rem; }
nav .menu_page .top .close_btn img { width: 2.5rem;}

nav .menu_page ul { padding: 1.5rem; }
nav .menu_page ul li { margin: 5rem 0;}
nav .menu_page ul li a { font-size: 2rem; font-weight: 700; padding: 1rem;}