How to push absolute positioned full width image down

Question

I am trying to make a similar effect as Voets Design has done with their full width image being pushed down by the navigation.

See here: http://www.voetsdesign.com/

So far the navigation and image is looking good; the only problem is that the image isn't being pushed down since it is `position: absolute.

The mark-up:

<nav class="clearfix">
        <div class="nav-wrapper">
        <ul class="clearfix">
            <li><a href="#">Home</a></li>
            <li><a href="#">How-to</a></li>
            <li><a href="#">Icons</a></li>
        </ul>
        <a href="#" id="btn">click</a>
        </div>
    </nav>

    <div class="image"></div>

See this fiddle: https://jsfiddle.net/uvxb53z8/1/

Hope someone has a solution.

Answer 1

Two main problems that prevented your example from working:

nav had a position: absolute applied to it (two times, also in a media query). This way it'll never affect layout of other elements as it's been taken out of document flow. You need relativefor that. You'd see on http://www.voetsdesign.com/ that .project-panel-header (the element that is pushing down the image) also has position: relative set.

Apart from that, nav also had a fixed height (40px). It probably would never push down your image anyway because of that, no matter how high its content might be.

$(function() {
    var btn        = $('#btn');
        menu       = $('nav ul');
        menuHeight = menu.height();
    
    $(btn).on('click', function(e) {
        e.preventDefault();
        menu.slideToggle();
    });
    
    $(window).resize(function(){
        var w = $(window).width();
        if(w > 320 && menu.is(':hidden')) {
            menu.removeAttr('style');
        }
    });
});

/* Clearfix */
.clearfix:before,
.clearfix:after {
    content: " ";
    display: table;
}
.clearfix:after {
    clear: both;
}
.clearfix {
    *zoom: 1;
}

/* Basic Styles */
html {
	height: 1500px;
}

body {
	background-color: #ece8e5;
	margin: 0;
}


/******** NAVIGATION ********/
nav {
	width: 100%;
	font-size: 11pt;
	font-family: Arial, sans-serif;
	font-weight: bold;
	position: relative;
	z-index: 9;
	display:block;
}

.nav-wrapper {
	width: 100%;
	margin: 0px auto;
	background-color: #455868;
}

.logo {
	width: 150px;
	height: 40px;
	background: #0CC;
	position: absolute;
}

nav ul {
	padding: 0;
	margin: 0 auto;
	width: 300px;
	height: 300px;
}
nav li {
	display: inline;
	float: left;
}
nav a {
	color: #fff;
	display: inline-block;
	width: 100px;
	text-align: center;
	text-decoration: none;
	line-height: 40px;
	text-shadow: 1px 1px 0px #283744;
}
nav li a {
	border-right: 1px solid #576979;
	box-sizing:border-box;
	-moz-box-sizing:border-box;
	-webkit-box-sizing:border-box;
}
nav li:last-child a {
	border-right: 0;
}
nav a:hover, nav a:active {
	background-color: transparent;
}
nav a#btn {
	display: none;
}



/******** FULLSCREEN BCK ********/

.image {
background-image: url(http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2014/06/wallpaper_51.jpg);
	background-position: center center;
	background-repeat: no-repeat;
	position: absolute;
	width: 100%;
	height: 100%;
	background-size: cover;
	background-color: #2b6c72;
}

/*Styles for screen 515px and lower*/
@media only screen and (min-width : 320px) {
	nav {
		border-bottom: 0;
		}

	nav ul {
		display: none;
		margin: 0 auto;
		width:300px
	}
	nav a#btn {
		display: block;
		background-color:#000;
		width: 100%;
		position: absolute;
		height:40px
	}
	nav a#btn:after {
		content:"";
		background: url('nav-icon.png') no-repeat;
		width: 30px;
		height: 30px;
		display: inline-block;
		position: absolute;
		right: 15px;
		top: 10px;
	}
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<nav class="clearfix">
    	<div class="nav-wrapper">
		<ul class="clearfix">
			<li><a href="#">Home</a></li>
			<li><a href="#">How-to</a></li>
			<li><a href="#">Icons</a></li>
		</ul>
		<a href="#" id="btn">click</a>
        </div>
	</nav>
    
    <div class="image"></div>

JSFiddle

Answer 2

Please don't go for a solution where you animate with javascript. Just add a class to the container and give the container an overflow: hidden;

Then you can animate the image's bottom property with a negative margin and the navigation's height property, assuming the navigation also has a hidden overflow.

Answer 3

one solution, just to help out a little (and I'm a little bit busy myself atm):

CSS:

.image.toggled{
    top: 300px;
}

jQ:

$(btn).on('click', function(e) {
    e.preventDefault();
    menu.slideToggle();
    $('.image').toggleClass('toggled');
});

https://jsfiddle.net/uvxb53z8/2/

Second solution would be to wrap the content with the element that drops down.