ul {list-style-type:none;
margin: 0;
padding:0;
    overflow:hidden;
    background-color: #333;
}

li {float: left;}

li a {display: block;
color: white;
text-align: center;
padding:14px 16px;
text-decoration: none;}

li a:hover {background-color: black}

h1 {color:red}

.heading{color:blue;}

.active\"{background-color: darkred}

body   {
    background-color: skyBlue;
    color: midnightblue;
}
p    {
    background-color: #123;
    color: yellow;
}