HTML/CSS : Add Responsive Box+Text Over Image - html

Question

I have a website www.weardenali.com. A part of the site has an image banner which I want to be overlayed by a Colored Box and some text, just like how Bellroy.com has theirs.
This is what I have, a failed code which isn't responsive :
Wear Denali (my site):
Bellroy:
This is the code i am using now :
.image-banner-content.content-left {
padding-left: 1% !important;
}
.sf-animation.image-banner-content,
.sf-animation[data-animation="none"].image-banner-content {
bottom: 80% !important;
}
a.link:hover,
a.link:active {
text-decoration: underline;
color:#F03E3E !important;
}
<div style="margin-bottom: 60%; float: left; display: inline-block; padding: 0px 10px 5px 10px; background-color: #ffffff; position: relative;">
<h3>
<span style="color: #0e3559;">
Designed by Urban Adventurers
</span>
</h3>
<h4>
<a href="http://weardenali.com/" class="link" style="color: #0e3559; float: left; font-family: 'Lato', sans-serif; -webkit-font-smoothing: antialiased; font-size: 12px; letter-spacing: 1.2px;">
> SHOP NOW
</a>
</h4>
</div>
I appreciate any advice/pointers.

Answer 1

Assuming your image banner was done in a kinda sorta ok way... This should work:
<!--- code for the image banner --->
<div class="MyAdvertisement">
<h3>Designed by Urban Adventurers</h3>
<a href="http://weardenali.com/">
<i class="fa fa-chevron-right" aria-hidden="true"></i>
SHOP NOW
</a>
</div>
<!--- end code for the image banner --->
Note that I added Font Awesome code for the > you had in there. Using glyphs the way you did is annoying for non-sighted users. Google Font Awesome. It's nice.
I'm not sure what you want to do exactly. I'll give you css for pixel values, but if you want responsive as is 'scales with the browser', use percentages.
.MyAdvertisement {
display: block;
position: absolute;
top: 0;
left: 0;
width: 200px;
height: auto;
overflow: hidden;
background: white;
}
If you can't put your code where I suggested, you are going to have to tell us more about your site code before anyone can help you in any meaningful way.
Good luck & have fun.