Having trouble with CSS background image - html

Question

I'm trying to use a stock photo to cover my page. For some reason I cannot seem to get this to work. My image just refuses to cover the page.
#cover {
background-image: url("https://i.stack.imgur.com/QE9pP.jpg");
background-size: cover;
background-size: center center;
background-repeat: no-repeat;
background-attachment: fixed;
background-color: #464646;
}
.cover-content {
color: hsla(182, 100%, 28%, 1);
font-family: font-family: 'Gravitas One', cursive;
font-size: 400%;
text-align: center;
}
<div id="cover">
<div class="cover-content">
<h1>Snowfall Design Studio</h1>
</div>
</div>

Answer 1

Your page does not cover the whole viewport. If you want an image to cover the whole screen, put the background-image on the html or body element
html {
height: 100%;
}
body {
min-height: 100%;
background-image: url("https://i.stack.imgur.com/QE9pP.jpg");
background-size: cover;
background-position: center center;
background-repeat: no-repeat;
background-attachment: fixed;
background-color: #464646;
}
.cover-content {
color: hsla(182, 100%, 28%, 1);
font-family: font-family: 'Gravitas One', cursive;
font-size: 400%;
text-align: center;
}
<div id="cover">
<div class="cover-content">
<h1>Snowfall Design Studio</h1>
</div>
</div>

Answer 2

Here is an example of the image covering the whole page: https://codepen.io/anon/pen/owJVgq
You needed to move the background images to the body tag and add a viewport of:
<meta name="viewport" content="width=device-width, initial-scale=1">
If you are looking for this section to be just a section and have more content below the picture, this is what you're looking for: https://codepen.io/anon/pen/BZvbNe
Again you need to add the viewport, but also add:
body {
margin: 0px;
padding: 0px;
}