:root{font-family:Montserrat}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;width:100%;background-color:#d9d9d9;font-family:Montserrat,sans-serif}aside{grid-area:sidebar;background-color:#fff;height:56rem}main{grid-area:main;background-color:#fff}footer{grid-area:footer}