I am trying to resize this responsive image with basic HTML and CSS. It seems as though no matter what I do, nothing will alter the size. Is there something preventing it from being a larger image? I'm teaching myself how to create a webpage and will accept any advice given! Thanks!
HTML
<ul id="gallery">
<li>
<a href="img/chicago.jpg">
<img src="img/chicago.jpg" alt="">
</a>
</li>
</ul>
CSS
#gallery{
margin:0;
padding:0;
list-style: none;
}
#gallery li {
float: left;
position: relative;
left: 30%;
width: 70%;
margin: 2.5%;
background-color: #f5f5f5;
color: #bdc3c7;
}