How to align navbar to center with css

Question

I need help to align my navbar bar to center Here is my code What's wrong with it? It does not align the menu to the center.

#nav {
  position: absolute;
  left: 0px;
  height: 40px;
  background-color: #2C64B4;
  width: 100%;
  margin: 0 auto;
}
#nav ul {
  margin: 0;
  padding: 0;
  list-style-type: none;
}
#nav ul li {
  margin: 0;
  padding: 0;
  float: left;
}
#nav ul li a {
  text-decoration: none;
  padding: 10px 20px;
  display: block;
  color: #FFF;
  text-align: center;
}

<div id="nav">
  <ul>
    <li><a href="#">Home</a>
    </li>
    <li><a href="#">About Us</a>
    </li>
    <li><a href="#">Blah</a>
    </li>
    <li><a href="#">exampl</a>
    </li>
  </ul>
</div>

Answer 1

One way would be to set the display of #nav ul to inline-block. Then add text-align: center to the parent element in order to center the child ul:

Example Here

#nav {
    position: absolute;
    left: 0px;
    height: 40px;
    background-color: #2C64B4;
    width: 100%;
    text-align: center;
}
#nav ul {
    margin: 0;
    padding: 0;
    display: inline-block;
}

Alternatively, you could also set the display of the parent element, #nav to flex, and then add justify-content: center to center the child element horizontally.

Example Here

#nav {
    position: absolute;
    left: 0px;
    height: 40px;
    background-color: #2C64B4;
    width: 100%;
    display: flex;
    justify-content: center;
}