Bootstrap 3 collapsed navbar - html

Question

Got a problem on my bootstrap 3 navbar thats never happened in any of my other projects.
Images:
when the navbar is collapsed it doesn't open to the full width of the window it opens only to a certain width in the middle of the screen could someone help me fix this?
Code: (I use SASS for css)
.navbar {
border: none;
border-radius: 0;
margin-right: 25px;
background-color: transparent;
border-color: transparent;
-webkit-transition: all 0.6s ease-out;
-moz-transition: all 0.6s ease-out;
-o-transition: all 0.6s ease-out;
-ms-transition: all 0.6s ease-out;
transition: all 0.6s ease-out;
}
.navbar .scrolled {
background: white;
background: white;
}
.navbar-nav li a {
color: #fff;
border: 3px solid transparent;
border-radius: 0px;
transition: background 0.5s;
margin-top: 10px;
padding-top: 5px;
padding-bottom: 5px;
}
.navbar-default .navbar-nav li a {
color: #fff;
border: 3px solid transparent;
border-radius: 0px;
transition: background 0.5s;
margin-top: 10px;
padding-top: 5px;
padding-bottom: 5px;
}
.navbar-default .navbar-nav li a:hover {
text-decoration: none;
color: #fff;
border: 3px solid white;
border-radius: 0px;
background-color: transparent;
background: transparent;
}
.navbar-default .navbar-nav .active a {
text-decoration: none;
border: 3px solid white;
border-radius: 0px;
color: #fff;
background-color: transparent;
background: transparent;
}
.navbar-default .navbar-nav .active a:hover {
background-color: transparent;
color: #fff;
}
.navbar-toggle {
position: relative;
float: right;
padding: 9px 10px;
margin-top: 8px;
margin-right: 15px;
margin-bottom: 8px;
background-color: transparent;
background-image: none;
border: 1px solid #fff;
border-radius: 4px;
}
.navbar-toggle .icon-bar {
display: block;
width: 22px;
height: 2px;
color: #fff;
border-radius: 1px;
border: 1px solid #fff;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.5/js/bootstrap.min.js"></script>
<nav id="mainNav" class="navbar navbar-default navbar-fixed-top">
<div class="container-fluid">
<div lass="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand page-scroll" href="#page-top">
<img src="assets/img/logo.png" alt="logo">
</a>
</div>
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
<li>About us
</li>
<li>Our venues
</li>
<li>Spaces & Services
</li>
<li>News & events
</li>
<li class="active">Give us a shout
</li>
</ul>
</div>
</div>
</nav>