Three tiered CSS menu - html

Question

I am trying to make a three tiered CSS style menu.
Jsfiddle here : https://jsfiddle.net/kBVYD/1/
What I need to accomplish is to have the third tier of the menu to stay aligned with the parent menu. When you hover over menu item A, Menu B dropsdown. When you hover over the menu items in the dropdown they show a third dropdown to the right of Menu B.
Right now the third menu (products) when hovered is floating to the left, and it should be droping down under the initial menu item.
<div class="full_width">
<div class="wrapper">
<div class="page-wrap">
<ul class="dropdown">
<li>HOME</li>
<li>PRODUCTS
<ul class="sub_menu">
<li>
Compliment Containers<span class="span_right">»</span>
<ul class="test">
<div class="menu_level3_01">
<span>Wastebaskets</span>
<span>Compost</span>
<span>Curbside</span>
<span>Deskside Recycling</span>
</div>
<div class="menu_level3_02">
<span>Large Trash Collection</span>
<span>Large Reycling Collection</span>
<span>Waste Streaming Containers</span>
</div>
</ul>
</li>
</ul>
</li>
<li>PRODUCTS
<ul class="sub_menu">
<li>
Compliment Containers<span class="span_right">»</span>
<ul class="test">
<div class="menu_level3_01">
<span>Wastebaskets</span>
<span>Compost</span>
<span>Curbside</span>
<span>Deskside Recycling</span>
</div>
<div class="menu_level3_02">
<span>Large Trash Collection</span>
<span>Large Reycling Collection</span>
<span>Waste Streaming Containers</span>
</div>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</div>

Answer 1

You just need to make the second tier relative and left: 0.
#menu1 ul.menu li ul.sub-menu li ul
{
position: relative;
display: none;
left: 0%;
}
https://jsfiddle.net/kBVYD/34/

Answer 2

I think this is what you want: Fiddle
You need the parent of the last menú (the "li") to NOT have position relative so the last menu absoluted position won't depend on the parent.
The as you have fixed values it's easy to set the submenu right where you want with 5px top (the margin of the first submenu with the main menú and the just a value for the left position, in this case 180px).
basically I've just added this to the fiddle:
.sub-menu > li {position:static !important;}
.sub-menu ul {top:5px !important; left:180px !important; }
Edited: the !important is just to overwrite your css's in the fiddle. You may better implement this attributes insteed of the others for a cleaner css sheet.