Untitled

<div class="container-fluid full">


</div>

.full {
    background: url('http://placehold.it/1920x1080') no-repeat center center fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
    -o-background-size: cover;
    height:100%;
}

<style>
.button {
    position: relative;
    background-color: #4CAF50;
    border: none;
    font-size: 28px;
    color: #FFFFFF;
    padding: 20px;
    width: 200px;
    text-align: center;
    -webkit-transition-duration: 0.4s; /* Safari */
    transition-duration: 0.4s;
    text-decoration: none;
    overflow: hidden;
    cursor: pointer;
}

.button:after {
    content: "";
    background: #90EE90;
    display: block;
    position: absolute;
    padding-top: 300%;
    padding-left: 350%;
    margin-left: -20px!important;
    margin-top: -120%;
    opacity: 0;
    transition: all 0.8s
}

.button:active:after {
    padding: 0;
    margin: 0;
    opacity: 1;
    transition: 0s
}
</style>
</head>
<body>

<button class="button">Click Me</button>

<section id="section1" class="section1">

    <a href="#contact-me"> <i class="fa fa-angle-down" style="font-size:100px;"></i></a>

      </section>
      <section id="contact-me" class="contact_section section2">

              <a href="#section1"> <i class="fa fa-angle-up" style="font-size:100px;"></i></a>

      </section>


.section1 {
    height: 100vh;
    text-align: center;
    background-color: white;
  }

  .section2 {
    background-color: white;
    text-align: center;
      //margin-top:100px;
    color: black;
    min-height: 90vh;
  }

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Liam Docherty Digital Portfolio</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="https://code.jquery.com/jquery-3.1.1.js" integrity="sha256-16cdPddA6VdVInumRGo6IbivbERE8p7CQR3HzTBuELA=" crossorigin="anonymous"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<style>
.body {
  font-family: 'Roboto', sans-serif;
  color: black;
}
.navbar.navbar-default {
  background-color: #FFFFFF;
  height: 10vh;
  z-index: 100;
}

.navbar.navbar-default ul {
  list-style-type: none;
  text-align: center;
}

.navbar.navbar-default ul li {
  display: inline-block;
}

.dropdown-menu li {
  text-align: center;
}

.dropdown .dropdown-menu {
  background-color: #FFFFFF;
}

.dropdown .dropdown-menu a {
  color: white;
}

.navbar.navbar-default ul li a {
  display: inline-block;
  padding: 3.5vh 8px 4px;
  color: black;
  text-decoration: none;
  font-size: 14pt;
  font-family: 'Roboto', sans-serif;
}

.navbar.navbar-default ul li:after {
  content: '';
  position: absolute;
  right: 50%;
  bottom: 0;
  left: 50%;
  height: 3px;
  background-color: black;
  border-radius: 9px;
  transition: all .2s;
}

.nav.navbar-nav,
.nav.navbar-nav>li {
  float: none;
}

.navbar.navbar-default ul li:hover:after {
  right: 0;
  left: 0;
}

.navbar.navbar-default ul.dropdown-menu li,
.navbar.navbar-default ul.dropdown-menu li a {
  position: relative;
  display: block;
}
</style>
<body>
  <div class="container">
    <nav class="navbar navbar-default navbar-fixed-top">
       <div class="container-fluid">
         <!-- Brand and toggle get grouped for better mobile display -->
         <div class="navbar-header">
           <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
                           <span class="sr-only">Toggle navigation</span>
                           <span class="icon-bar"></span>
                           <span class="icon-bar"></span>
                           <span class="icon-bar"></span>
           </button>
         </div>
         <!-- Collect the nav links, forms, and other content for toggling -->
         <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
           <ul class="nav navbar-nav">
             <li><a href="#">Home</a>
             </li>
             <li class="dropdown">
               <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="true">About Me <span class="caret"></span></a>
               <ul class="dropdown-menu">
                 <li><a href="#">Action</a>
                 </li>
                 <li><a href="#section3">Contact</a>
                 </li>
                 <li><a href="#">Something else here</a>
                 </li>
                 <li><a href="#">Separated link</a>
                 </li>
                 <li><a href="#">One more separated link</a>
                 </li>
               </ul>
             </li>
             <li class="dropdown">
               <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Units <span class="caret"></span></a>
               <ul class="dropdown-menu">
                 <li><a href="#">Action</a>
                 </li>
                 <li><a href="#">Another action</a>
                 </li>
                 <li><a href="#">Something else here</a>
                 </li>
                 <li><a href="#">Separated link</a>
                 </li>

                 <li><a href="#">One more separated link</a>
                 </li>
               </ul>
             </li>
             <li><a href="#">Clients</a>
             </li>
             <li><a href="#contact-me">Contact Me</a>
             </li>
           </ul>
         </div>
         <!-- /.navbar-collapse -->
       </div>
       <!-- /.container-fluid -->
     </nav>


</body>
</html>