Check out example codes for "css navabr". It will help you in understanding the concepts better.

Code Example 1

<--for inserting a horizontal navigation in Css just make a 
list of navigation content links then in style tag add this tag -->
li {
  display: inline;
}

Code Example 2

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;
}


/* Change the link color to #111 (black) on hover */
li a:hover {
  background-color: 
#111;
}

Code Example 3

ul {
  list-style-type: none;
  
margin: 0;
  padding: 0;
  width: 
200px;
  background-color: #f1f1f1;
}

li a {
  display: 
block;
  color: #000;
  padding: 8px 16px;
  text-decoration: none;
}

/* 
Change the link color on hover */
li a:hover {
  
background-color: #555;
  color: white;
}

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