-moz-box-sizing rule preventing user from seeing form field input in firefox - forms

Question

As the title says, I have a weird css error on my hands. I've built a rails app using bootstrap and some custom css, testing the whole thing in chrome initially. I started checking it out in firefox and my user sign in form-fields don't seem to respond to clicking on them or typing. You can't see the placeholder value nor what you're typing. Has anyone heard of this before? Any ideas what causes it?
To illustrate I made a jsfiddle (my first). I was kind of heavy handed and just copied the css right out of my inspector so it's a little bit of a mess. Open it in firefox and the form cannot be typed into. In chrome it's fine. The offending line on this fiddle appears to be 28, the -mox-box-sizing rule.
http://jsfiddle.net/vRF3F/
.row-fluid [class*="span"] {
-moz-box-sizing: border-box;
display: block;
float: left;
margin-left: 2.12766%;
min-height: 30px;
width: 100%;
}

Answer 1

Ok, I think I have found the cause:
If you remove this line:
select, textarea, input[type="text"], input[type="password"], input[type="datetime"], input[type="datetime-local"], input[type="date"], input[type="month"], input[type="time"], input[type="week"], input[type="number"], input[type="email"], input[type="url"], input[type="search"], input[type="tel"], input[type="color"], .uneditable-input {
border-radius: 4px 4px 4px 4px;
color: #555555;
display: inline-block;
font-size: 14px;
/* height: 20px;*/
line-height: 20px;
margin-bottom: 10px;
padding: 4px 6px;
vertical-align: middle;
}
it will work. Setting the height property will cause the parent div to collapse so you won't see the input box anymore, hence it appear to not work. The padding alone should be fine to give it a height.
See updated fiddle here:
http://jsfiddle.net/AbdiasSoftware/vRF3F/3/

Answer 2

Bootstrap CSS does include the box-sizing property with all vendor prefixes in that selector, I don't know why you are only getting the -moz
.row-fluid [class*="span"] {
...
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
-ms-box-sizing: border-box;
box-sizing: border-box;
...
}
Try updating your CSS with that and you will note that your inputs are now smaller in height so just set a specific value for height and I think you'll be good to go
.new-user input[type="text"],.new-user input[type="password"]{
height: 60px;
}