/* Keep the shared header isolated from lesson and certificate styles. */
body>.site-header{padding:0;flex:none;width:100%;font-family:Arial,Helvetica,sans-serif;text-align:left;box-sizing:border-box}
.site-header *,.site-header *::before,.site-header *::after{box-sizing:border-box}
.site-header .site-logo span{font-size:inherit;font-weight:inherit}
.site-header .site-logo small{font-weight:650}
.site-header .site-menu-toggle,.site-header .site-submenu-toggle{font-family:Arial,Helvetica,sans-serif}