html and css and responsive design

Here's some feedback:

• you could probably do without the item div, using something like <main> instead.
• instead of using class=bold, you could go for a heading element like <h1>
• you don't need to declare a white border of a white element, because it has that by default.
• you could just set the max-width of the image to 100% in the CSS instead of adjusting the size manually