.container {
    max-width: 960px; 
}

.header {
    margin-top: 4rem;
    text-align: center 
}

.value-prop {
    margin-top: 1rem; 
}

.value-props {
    margin-top: 4rem;
    margin-bottom: 4rem; 
 }
 
.docs-header {
    text-transform: uppercase;
    font-size: 1.8rem;
    letter-spacing: .2rem;
    font-weight: 500; 
 }
  
.docs-section {
    border-top: 1px solid #eee;
    padding: 4rem 0;
    margin-bottom: 0;}
}
/*This CSS belongs to the nav_bar.php file*/

.nav_bar{
	margin: 0;
}

.spacer{
	margin: 50px;
}
.navbar{ 
	list-style-type: none;
	margin: 0;
	padding: 0;
	overflow: hidden;
	background-color: rgb(50,50,50);
	position: fixed;
	top: 0;
	width: 100%;
	
}

.nav_bar li{
	display: inline;
	float: left;
	margin: 0;

}

.nav_bar li a {
    display: block;
    color: white;
    text-align: center;
   
    padding: 14px 16px;
    padding-bottom: 10px;
    text-decoration: none;
 }
 
 .nav_bar a:hover { 
	
	background-color: rgb(64,64,64);
}

.container {
    max-width: 960px; 
}

.header {
    margin-top: 4rem;
    text-align: center;
}

.value-prop {
    margin-top: 1rem; 
}

.value-props {
    margin-top: 4rem;
    margin-bottom: 4rem; 
 }
 
.docs-header {
    text-transform: uppercase;
    font-size: 1.8rem;
    letter-spacing: .2rem;
    font-weight: 500; 
 }
  
.docs-section {
    border-top: 1px solid #eee;
    padding: 4rem 0;
    margin-bottom: 0;}
}

Add nav bar styles and spacer between nav bar and other elements
Add nav bar styles and spacer between nav bar and other elements
