nav{background-color:#fff;position:fixed;bottom:0;left:0;width:100%;display:flex;align:center;text-align:center;margin:0;padding:0}nav span{flex-grow:1}nav a{color:#000;text-decoration:none}nav b a:before{content:""}nav a:before{content:"> ";color:#000}nav a:hover{text-decoration:underline}