Div Spacing between Images - html

Question

Dear Members of this amazing Forum
I recently started using Html again and for the love of God i can't figure out where the problem is.
I created 3 Div's, each with 1 image, 1 group of images, and 1 image again. (same problem if all are in the same div, with a rather basic Css)
.HeaderNav {
margin: 0;
padding: 0;
overflow: auto;
opacity: 1;
overflow-x: hidden;
overflow-y: hidden;
display: block;
}
And the Html to use it.
<div class="HeaderNav">
<img src="../Images/shang3_03.jpg" alt="" width="940" height="120" class="HeaderNav" />
</div>
<div class="HeaderNav">
<img src="../Images/shang3_05.jpg" alt="" width="240" height="55" />
<img src="../Images/shang3_06.jpg" alt="" width="66" height="55" />
<img src="../Images/shang3_07.jpg" alt="" width="84" height="55" />
<img src="../Images/shang3_08.jpg" alt="" width="72" height="55" />
<img src="../Images/shang3_09.jpg" alt="" width="74" height="55" />
<img src="../Images/shang3_10.jpg" alt="" width="107" height="55" />
<img src="../Images/shang3_11.jpg" alt="" width="62" height="55" />
<img src="../Images/shang3_12.jpg" alt="" width="70" height="55" />
<img src="../Images/shang3_13.jpg" alt="" width="165" height="55" />
</div>
<div class="HeaderNav">
<img src="../Images/shang3_14.jpg" alt="" width="940" height="133" />
<br/>
</div>
What results in the image below, sadly i don't get where the little space is from. Or why it's not on top too. Somehow i'm really confused where this issue is from and i'd realy appreciate the help.
[2]: http://i.imgur.com/SIkB7Hs.png <-- this one schould be a bit more clear sorry about that
edit: if found a rather face-> wall way to fix it with margin-top. And just making a div class for everyline. What's probably not the best way to go.

Answer 1

Ok, a few things here.
For one, with questions like this, it helps people answering a LOT if you post your code in a JSFiddle, like this here (though the images don't show there because they're relative URLs).
Also, it seems if you float the images to the left you can get rid of the spacing:
.HeaderNav img {
float: left;
}
Just to note, I have no idea why the spacing existed in the first place. Another tip: you should use 'Inspect Element' in Chrome or Firebug in Firefox to take a look at elements and see padding, margins, etc. Usually that makes it obvious where whitespace is coming from, though in this case I found nothing. Floating to the left was just an idea that seemed to work.

Answer 2

Probably because your <img> are still being declared as inline-level elements. Use:
.HeaderNav img {
display: block;
}
Also, you should check if a margin or padding have been assigned to the image element. If you do, reset them.

Answer 3

Also, make sure your padding and margin are 0 for the html and body...
so, try this:
body, html {
margin: 0;
padding: 0;
}
HTML cannot be used on it's own; it has to have CSS working with it continuously.

Answer 4

A bit confusing question, I don't understand it all. But check this jsFiddle. Is this what you mean?
Also remove the HeaderNav class from the first image.
<div class="HeaderNav">
<img src="../Images/shang3_03.jpg" alt="" width="940" height="120" />
</div>

Answer 5

The img element default display type like inline-block, because of the font-size, so the img element maybe have 3px space.
To solve this problem, you can use the code below:
.HeaderNav img {
display: block;
}
or
.HeaderNav img {
float: left;
}
They all will change the img elements display type, I recommend the first one.