CSS Navigation Bar

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CSS Navigation Bar
Navigation Bar is the important component of a website. It gives us ease of navigating important links at one place.
Normally there are two types of Navigation Bars
1)     Vertical
2)     Horizontal
Vertical Navigation Bar
Let us create a vertical navigation bar in a step by step manner. A navigation bar needs standard HTML as a base. In this chapter we will use lists to create navigation bars. A navigation bar is basically a list of links, so using the <ul> and <li> elements makes perfect sense: So the basic html code would look like this.
<!DOCTYPE html>
<html>
<body>
<ul>
  <li><a href="#home">Home</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>
</ul>
</body>
</html>

This was just basic HTML. Now let's remove the bullets and the margins and padding from the list using CSS:
ul{
        background-color:orange;
        list-style-type:none;
        margin:0;
        padding:0;
        width:100px;
        font-weight:bold;
        height:100%;
        position:fixed;
        border:1px solid blue;
        }
Here list-style-type: none; - Removes the bullets. and  margin: 0; and padding: 0; to remove browser  default settings and makes margin and paddding 0. we will set width of 60px. Position:fixed will make ul block fixed irrespective of scrollbar.

Now we will tweak a tag. since a tag is inside li tag so our style will go like this.

 li a {
  display: block;
}

display: block; - Displaying the links as block elements makes the whole link area , width: 60px; - Block elements take up the full width available by default. We want to specify a 100 pixels width
You can also set the width of <ul>, and remove the width of <a>, as they will take up the full width available when displayed as block elements. This will produce the same result as our previous example:

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;
}
Center Links & Add Borders
Add text-align:center to <li> or <a> to center the links.
Add the border property to <ul> add a border around the navbar. If you also want borders inside the navbar, add a border-bottom to all <li> elements, except for the last one:
<!DOCTYPE html>
<html>
<head>
<style>
ul{
        background-color:#ffffff;
        list-style-type:none;
        width:200px;
        height:100%;
        margin:0 auto;
        padding:0;
        font-weight:bold;
        border:1px solid blue;
        align:center;
        position:fixed;
        background-color:yellow;
        }
li{
        display:inline-block;
        width:200px;
        padding:20px 10px;
        text-align:center;
       
        }
li a {
  li a {
  display: block;
  color: #000;
  padding: 16px 8px;
  text-decoration: none;
}

li a:hover {
  background-color: #555;
  color: white;
}
</style>
</head>
<body>

<ul>
  <li><a href="#home">Home</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>
  <li><a href="#Products">Products</a></li>
</ul>

</body>
</html>
Horizontal Navigation Bar
There are two ways to create a horizontal navigation bar. Using inline or floating list items.
Inline List Items
One way to build a horizontal navigation bar is to specify the <li> elements as inline, in addition to the "standard" code from the previous page:
display: inline; -  <li> elements are block elements by default. Here, we assign as much width required by li tag and remove the line breaks before and after each list item, to display them on one line
<!DOCTYPE html>
<html>
<head>
<style>
ul{
        background-color:#ffffff;
        list-style-type:none;
        width:80%;
        margin:0 auto;
        padding:0;
        font-weight:bold;
        border:1px solid blue;
        align:center;
        }
li{
        display:inline-block;
        width:212.6px;
        text-align:center;
        background-color:skyblue;
        }
li a {
  display: block;
  color: #000;
  padding: 8px 16px;
  text-decoration: none;
  align:center;
  margin:auto;
}
li a:hover {
  background-color: #555;
  color: white;
}


</style>
</head>
<body>

<ul>
  <li><a href="#home">Home</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>
  <li><a href="#Products">Products</a></li>
</ul>

</body>
</html>
Horizontal Navigation Bar using Floating List Items
Another way of creating a horizontal navigation bar is to float the <li> elements, and specify a layout for the navigation links:
li {
  float: left;
}

<!DOCTYPE html>
<html>
<head>
<style>
ul{
        background-color:white;
        list-style-type:none;
        width:80%;
        margin:0 auto;
        padding:0;
        font-weight:bold;
       
       
        }

li{
        float:left;
        width:215.8px;
        text-align:center;
        background-color:skyblue;
        }
       
li a {
  display: block;
  align:center;
   color: #000;
  padding: 8px 16px;
  text-decoration: none;
  border:1px solid green;

}
li a:hover {
  background-color: #555;
  color: white;
}


</style>
</head>
<body>

<ul>
  <li><a href="#home">Home</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>
  <li><a href="#Products">Products</a></li>
</ul>

</body>
</html>

float: left; - use float to get block elements to slide next to each other


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