.navbar {list-style-type: none; margin: 0; padding: 0; overflow: hidden; background-color: black; position: sticky; top: 0;}

.navbar li {  float: left;}

.navbar a { display: block; color: white; text-align: center; font-family: Arial; font-size: 100%; padding: 20px 16px; text-decoration: none;}

.navbar a:hover {  background-color: yellowgreen;}

.navbar a.active {  background-color: firebrick;}