How come the navigation's box-shadow isn't showing? - html

Question

I want to have the header's navigation to have a box shadow. However, the box-shadow seems to be hidden by the carousel I placed below it. I put a z-index of all children of #carousel but the box-shadow still doesn't show up.
(page snippet)
Here's what happens when I push #carousel down when I give it margin-top: 40px;
(another page snippet)
HTML
<header>
<nav>
<div class="container">
<h1><img src="images/logo.png" alt="" id="logo"></h1>
<h1 id="NHS">Newport High School</h1>
<ul id="nav">
<li>Home</li>
<li>About</li>
<li>Students</li>
<li>Parents</li>
<li>Activities & Atletics</li>
<li>Resources</li>
</ul>
</div><!--container--->
</nav>
</header><div id="carousel">
<div class="inner">
<ul>
<li><img src="images/example-slide-1.jpg" alt="Fish"></li>
<li><img src="images/example-slide-2.jpg" alt="Elephant"></li>
<li><img src="images/example-slide-3.jpg" alt="Giraffe"></li>
<li><img src="images/example-slide-4.jpg" alt="Fish"></li>
</ul>
</div>
</div>
CSS
/* - - - header - - - */
header {
background: rgb(30,27,27); /* Old browsers */
background: -moz-linear-gradient(top, rgba(30,27,27,1) 0%, rgba(2,2,2,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(30,27,27,1)), color-stop(100%,rgba(2,2,2,1))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, rgba(30,27,27,1) 0%,rgba(2,2,2,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, rgba(30,27,27,1) 0%,rgba(2,2,2,1) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, rgba(30,27,27,1) 0%,rgba(2,2,2,1) 100%); /* IE10+ */
background: linear-gradient(to bottom, rgba(30,27,27,1) 0%,rgba(2,2,2,1) 100%);
box-shadow: 0px 3px 15px rgba(50, 50, 50, .7);
-webkit-box-shadow: 0px 3px 15px rgba(50, 50, 50, .7);
-moz-box-shadow: 0px 3px 15px rgba(50, 50, 50, .7);
z-index: 1000;
}
header h1, header li {
float: left;
}
header a {
color: #A1A1A1 ;
font-family: arial, helvetica, verana, sans-serif;
}
header a:hover {
color: #A1A1A1;
text-decoration: none;
}
#logo {
width: 50px;
}
#NHS {
margin: 1.8% 0 0 2%;
font-size: 1.2em;
text-transform: uppercase;
}
#NHS a {
color: #F6F6F6;
letter-spacing: 2px;
}
#nav {
float: right;
margin: 3% 0 0 0;
}
#nav li {
margin-right: 20px;
padding: 0;
}
#nav li:last-of-type {
margin-right: 0px;
}
#nav a {
font-size: .8em;
text-transform: uppercase;
padding-top: 3px;
font-weight: 400;
}
#nav a:hover {
border-top: 1px dotted #C41D0E;
}
/* - - - carousel - - - */
#carousel {
margin: 40px 0 0 0;
width: 100%;
overflow: hidden;
z-index: -999;
}
#carousel .inner {
box-sizing: border-box;
margin-left: -50px;
z-index: -5000;
}
#carousel ul {
width: 60000px;
height: 480px;
z-index: -5000;
}
#carousel li {
height: 480px;
float: left;
overflow: hidden;
z-index: -5000;
}
#carousel img {
text-align: center;
width: 1375px;
height: auto;
z-index: -5000;
}

Answer 1

Remember z-index only works with positioned elements. So both your carousel and header needs to have a position value other than static and then you can specify a higher z-index to the header. That way box-shadow will appear properly above the carousel.

Answer 2

You only need to add position:relative to the header. The carousel doesn't need a z-index alteration.

Answer 3

try adding !important to your shadowbox. I think that should work.
box-shadow: 0px 3px 15px rgba(50, 50, 50, .7) !important;
-webkit-box-shadow: 0px 3px 15px rgba(50, 50, 50, .7) !important;
-moz-box-shadow: 0px 3px 15px rgba(50, 50, 50, .7) !important;