/* ==========================================================================
Wolfram Foundation Header CSS
========================================================================== */
html { scroll-behavior: smooth; }
html, html._header-thick, html._header-thin { border-top: 0 !important; }
header#top_nav {
	font-family: 'Fira Sans', source sans pro, Arial, Helvetica, sans-serif;
	background-color: #222;	
	padding: 0.2rem 0 0.1rem 0;
}
header .page-width {
	margin: 0 auto;
	max-width: 1100px;
	padding: 0 2rem;
	width: 100%;
}
header#top_nav section {
	max-width: 1100px;
	display: grid;
	justify-content: space-between;
	grid-auto-flow: column;
	align-items: center;
}
header#top_nav img { width: 301px; }
header#top_nav a{
	font-size: 0.875rem;
	color: #bababa;
	margin: 0.6rem 1rem 0 0;
	text-transform: uppercase;
}

header#top_nav a:hover{ color: #ffc16e; }

/* ==========================================================================
responsive breakpoint styles
========================================================================== */
/* styles for small screens (600px)
========================================================================== */
@media all and (max-width: 900px) {
	#top_nav img{ max-width: 210px;}
}
@media all and (max-width: 600px) {
	header#top_nav section { justify-content: center; }
	#top_nav img{
		margin: 0 auto;
		display: block;
		max-width: 100%;
	}
	#top_nav nav { display: none; }
}