ブラウザのサイズに依らずに画像を縦いっぱいに表示するには
質問させてください。
このサイトのようにブラウザのサイズがどんな高さであっても（スマホなども含みます）、ほぼ縦幅いっぱいに画像を表示したいと思います。
しかし自分のページでは、スマホでの表示時に横幅に依存してしまって縦の長さが短くなってしまいます。
どのようにCSSを書けばよいのか教えて頂けませんでしょうか？
宜しくお願い致します。
html {
font-size: 62.5% !important; /* 10 px */
}
/*header {
position: absolute;
text-align: center;
top: 0px;
z-index: 1000;
color: #fff;
width: 100%;
height: 64px;
border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}*/
/*img {
display: block;
max-width: 100%;
height: auto;
}*/
.carousel-control.left, .carousel-control.right {
background: none !important;
filter: progid: none !important;
outline: 0;
}
.carousel .carousel-control {
visibility: hidden;
}
.carousel:hover .carousel-control {
visibility: visible;
}
.carousel-indicators {
bottom:-50px;
}
.carousel-inner {
margin-bottom:50px;
}
/*.logo {
float: left;
text-align: left;
display: inline-block;
}*/
.transparent-header {
z-index: 22;
position: absolute;
width: 100%;
left: 0;
background-color: rgba(255, 255, 255, 0.9);
border-bottom: 1px solid rgba(0, 0, 0, 0.07);
}
#carousel-example-generic {
width: 100%;
height: 100%;
position: relative;
}
.nav::after,
.nav::before,
.navbar-header::after,
.navbar::after {
display: table-caption;
}
.nav.navbar-nav li,
.nav.navbar-nav li a {
display: inline-block;
}
#gnav {
font-size: 0.9em;
width: 100% !important;
}
#gnav
/*#gnav_nav*/ {
text-align: center;
}
#logo
img {
display: block;
margin: auto;
}
#intro {
position: relative;
overflow: hidden;
}
#bg-image3 {
background: url("http://htmlcoder.me/preview/the_project/v.1.3/template/images/slider-fullscreen-slide-1.jpg");
}
.bg-image {
background-position: center;
background-repeat: no-repeat;
background-size: cover;
display: block;
overflow: hidden;
position: relative;
width: 100%;
height: 100%;
}<!DOCTYPE html>
<html lang="en-EN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge"> <!-- for IE -->
<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0">
<title>{% block title %}{% endblock %}</title>
<meta name=”robots” content=”noindex,nofollow,noarchive,noodp,noydir”>
<!-- <link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jquerymobile/1.4.5/jquery.mobile.min.css"> -->
<link rel="stylesheet" type="text/css" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" />
<link rel="stylesheet" type="text/css" href="{% static 'font-awesome/css/font-awesome.min.css' %}" />
{% block additional_css %}{% endblock %}
{% block custom_css %}{% endblock %}
</head>
<body>
<div id="wrapper">
<!-- <div class="container" id="range">
<div class="row">
<div class="col-xs-12 col-sm-6 col-md-4 col-lg-3" style="background-color:Yellow;">ExtraSmall</div>
<div class="hidden-xs col-sm-6 col-md-4 col-lg-3" style="background-color:green;">Small</div>
<div class="hidden-xs hidden-sm col-md-4 col-lg-3" style="background-color:blue;">Midium</div>
<div class="hidden-xs hidden-sm hidden-md col-lg-3" style="background-color:Red;">Large</div>
</div>
</div> -->
<!-- Header -->
<header id="header" class="header clearfix fixed transparent-header" >
<div class="container-fluid" id="header-inner">
<div class="row">
<!-- Global Navigation -->
<div id="gnav" class="" data-spy="affix" data-offset-top="94">
<nav class="navbar navbar-inverse" id="gnav_nav">
<ul class="nav navbar-nav" id="gnav_ul">
<li class="dropdown">
<a class="" data-toggle="dropdown" href="index.html">商品紹介</a>
<!-- Dropdown -->
<ul class="dropdown-menu">
<li>
<a class="" href='#'>ジュース <i class=""></i></a>
<ul class="sub-dropdown">
<li><a href="#">オレンジ</a></li>
<li><a href="#">アップル</a></li>
<li><a href="#">グレープ</a></li>
</ul>
</li>
<li>
<a class="" href='#'>寿司 <i class=""></i></a>
<ul class="sub-dropdown">
<li><a href="#">マグロ</a></li>
<li><a href="#">サーモン</a></li>
<li><a href="#">エンガワ</a></li>
</ul>
</li>
</ul> <!-- dropdown-menu -->
</li> <!-- .dropdown -->
<li class="dropdown">
<a class="" data-toggle="dropdown" href="index.html">ご注文</a>
<ul class="dropdown-menu">
<li>
<a class="" href='#'>スマートフォン <i class=""></i></a>
<ul class="sub-dropdown">
<li><a href="#">iPhone</a></li>
<li><a href="#">Xperia</a></li>
<li><a href="#">Galaxy</a></li>
</ul>
</li>
<li>
<a class="" href='#'>野菜 <i class=""></i></a>
<ul class="sub-dropdown">
<li><a href="#">トマト</a></li>
<li><a href="#">レタス</a></li>
<li><a href="#">枝豆</a></li>
</ul>
</li>
</ul> <!-- dropdown-menu -->
</li> <!-- .dropdown -->
<li class="dropdown">
<a class="" data-toggle="dropdown" href="index.html">お問い合わせ</a>
<ul class="dropdown-menu">
<li><a class="" href='#'>自分用</a></li>
<li><a class="" href='#'>他人用</a></li>
</ul> <!-- dropdown-menu -->
</li> <!-- .dropdown -->
<li class="dropdown">
<a class="" data-toggle="dropdown" href="index.html">会社案内</a>
<ul class="dropdown-menu">
<li><a class="" href='#'>フォーム</a></li>
<li><a class="" href='#'>電話</a></li>
</ul> <!-- dropdown-menu -->
</li> <!-- dropdown -->
</ul> <!-- .nav .navbar-nav -->
</nav> <!-- .navbar .navbar-default -->
</div> <!-- #gnav .col-md-9 -->
<!-- Logo -->
<div id="logo" class="">
<a href="#">
<img src="http://vignette2.wikia.nocookie.net/logopedia/images/e/ee/Burger_King_Logo.svg.png/revision/20120422044236" id="logo-img" class="img-responsive logo-img" height="50" width="50">
</a>
</div> <!-- #logo .col-sm-3 -->
</div> <!-- .row -->
</div> <!-- .container -->
</header> <!-- #header .clearfix -->
<section id="intro">
<article id="apple">
<div id="carousel-example-generic" class="carousel slide" data-ride="carousel">
<ol class="carousel-indicators">
<li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
<li data-target="#carousel-example-generic" data-slide-to="1"></li>
<li data-target="#carousel-example-generic" data-slide-to="2"></li>
</ol>
<div class="carousel-inner" role="listbox">
<div class="item active">
<img class="melon img-responsive" src="http://htmlcoder.me/preview/the_project/v.1.3/template/images/slider-fullscreen-slide-1.jpg" alt="First slide">
</div>
<div class="item">
<img class="melon img-responsive" src="http://htmlcoder.me/preview/the_project/v.1.3/template/images/slider-fullscreen-slide-2.jpg" alt="Second slide">
</div>
<div class="item" id="bg-image3">
<div class="bg-image" id="bg-image3">
<h2 class="" id="">This is the headline</h2>
<p class="" id="">This is a pen. This is an apple. U~n, apple pen.</p>
</div>
</div>
</div>
<a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
<span class="icon-prev" aria-hidden="true"></span>
<span class="sr-only">Previous</span>
</a>
<a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
<span class="icon-next" aria-hidden="true"></span>
<span class="sr-only">Next</span>
</a>
</div>
<div>
<span>Bootstrap carousel</span>
</div>
</article>
</section>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
<h1><span>I LOVE TOMATO!!!!</span></h1><br>
</div> <!-- #wrapper -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript" src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</body>
</html>