Only display image in a div on one page

Hi, I was wondering if someone could help me please? I am trying to display an image on just the home page of a site. I’ve managed to get it to display by adding the following code to page.php:

<div class="homeimage" alt="seascape">
</div>

and then in my stylesheet:

.homeimage {
	background-image: url(images/home.jpg);
	background-color: #ffffff;
	border: 10px solid #ffffff;
	height: 400px;
	width: 83%;
	margin: 0em auto;
	margin-bottom: 20px;
}

This works well but the picture displays on all pages except for Blog. I was wondering how I would go about making it just display on the front page of the site. Thanks,
Bek.
https://www.1978bektest.co.uk/howell2