Is it possible to swap the image link:
https://i.sstatic.net/Wa4mo.jpg
with this new link:
https://i.sstatic.net/hqVuQ.jpg
without having to use a photo editor?
Below is the CSS and HTML code:
I was unable to upload the logo due to the restriction of needing at least 10 reputation points in order to post more than 2 links, so I might include it in another comment.
header {
background-color: rgba(255, 255, 255, 0.9);
height: 50px;
display: flex;
flex-direction: row;
align-items: center;
position: fixed;
width: 100%;
box-sizing: border-box;
top: 0;
left: 0;
z-index: 2;
}
header .logo {
position: fixed;
left: 50%;
top: 13px;
display: inline-block;
}
.background-image {
position: fixed;
left: 0;
top: 0;
z-index: 1;
width: 100%;
height: 100%;
background: #fff url('https://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/%D0%94%D0%B7%D0%B5%D0%BC%D0%B1%D1%80%D0%BE%D0%BD%D1%8F._%D0%9F%D0%B5%D1%80%D0%B2%D1%8B%D0%B5_%D0%BB%D1%83%D1%87%D0%B8_%D1%81%D0%BE%D0%BB%D0%BD%D1%86%D0%B0.jpg/800px-%D0%94%D0%B7%D0%B5%D0%BC%D0%B...
background-size: 100%;
}<body>
<header>
<div class="header-section logo">
<a href="/">
<img src="http://i.imgur.com/IB1gfZB.png" alt="...">
</a>
</div>
</header>
<div class="background-image"></div>
</body>