#header{background-color:#f3f3f3;padding:37px 0}#header .header_row{align-items:center;display:flex;justify-content:space-between;margin:0 auto;max-width:1280px}#header .header_row .menu{text-align:right}#header .header_row .menu a{color:#333;text-decoration:underline}#header .header_row .menu a:hover{color:#000}#header .header_row .menu .welcome{font-size:32px}@media only screen and (max-width:600px){#header .header_row{align-items:center;flex-direction:column;row-gap:20px;text-align:center}}