Unknown additional space on <div> top - html

Question

I am creating a table madde with several divs, and I am having an extra space between the first row (styled as head) and the rest of them, only the fist two columns (divs). Here you can see very clear:
There is no style atribute causing this space, at least I am not able to find the reason of it.
I have reproduced it on jsfiddle and you can see that it also sets the extra space: DEMO
Here I bring HTML & Syle related code:
HTML:
<div class="tableWrap">
<div class="tableHeader">
<div class="contentColumn60">
<span class="tableHeaderText">Turno</span>
</div>
<div class="contentColumn20">
<span class="tableHeaderText">Tipo</span>
</div>
<div class="contentColumn10">
<span class="tableHeaderText">Editar</span>
</div>
<div class="contentColumn10">
<span class="tableHeaderText">Reactivar</span>
</div>
</div>
<div class="tableContent">
<div class="contentColumn60">
<span class="tableContentText">Mañana(17:00 - 21:00)</span>
</div>
<div class="contentColumn20">
<span class="tableContentText">Mañanas</span>
</div>
<div class="contentColumn10">
<div class="editIcon"></div>
</div>
<div class="contentColumn10">
<div class="discontinueIcon"></div>
</div>
</div>
<div class="tableContent">
<div class="contentColumn60">
<span class="tableContentText">Mañana(17:00 - 21:00)</span>
</div>
<div class="contentColumn20">
<span class="tableContentText">Mañanas</span>
</div>
<div class="contentColumn10">
<div class="editIcon"></div>
</div>
<div class="contentColumn10">
<div class="discontinueIcon"></div>
</div>
</div>
<div class="tableContent">
<div class="contentColumn60">
<span class="tableContentText">Mañana(17:00 - 21:00)</span>
</div>
<div class="contentColumn20">
<span class="tableContentText">Mañanas</span>
</div>
<div class="contentColumn10">
<div class="editIcon"></div>
</div>
<div class="contentColumn10">
<div class="discontinueIcon"></div>
</div>
</div>
STYLE:
.tableWrap{
width: 100%;
height:380px;
border:#ccc 1px solid;
border-radius:3px;
box-shadow: 0 1px 2px #d1d1d1;
margin: 10px;
background: -webkit-gradient(linear, left top, left bottom, from(#fbfbfb), to(#fafafa));
background: -moz-linear-gradient(top, #fbfbfb, #fafafa);
font-size:12px;
color:#666;}
.tableHeader{
height: 40px;
width: 100%;
background: -moz-linear-gradient(center top , #EDEDED, #EBEBEB) repeat scroll 0 0 rgba(0, 0, 0, 0);
border-bottom: 1px solid #E0E0E0;
border-left: 1px solid #E0E0E0;
border-top: 1px solid #FAFAFA;
display: inline-block;
font-weight: 600;
}
.tableHeaderText{
line-height: 40px;
padding: 0 10px;
}
.tableContent{
height: 40px;
width: 100%;
}
.tableContentText{
line-height: 40px;
padding: 0 0 0 20px;
}
.contentColumn60{
height: 40px;
width: 58%;
border-top:1px solid #fafafa;
border-bottom:1px solid #e0e0e0;
border-left:1px solid #e0e0e0;
display: inline-block;
}
.contentColumn20{
height: 40px;
width: 20%;
border-top:1px solid #fafafa;
border-bottom:1px solid #e0e0e0;
border-left:1px solid #e0e0e0;
display: inline-block;
}
.contentColumn10{
height: 40px;
width: 10%;
border-top:1px solid #fafafa;
border-bottom:1px solid #e0e0e0;
border-left:1px solid #e0e0e0;
display: inline-block;
}
.discontinueIcon{
width: 23px;
height: 23px;
background-size: 98%;
background-image: url(images/error.png);
background-repeat:no-repeat;
margin: 0 auto;
}
.editIcon{
width: 23px;
height: 23px;
background-size: 98%;
background-image: url(images/edit.png);
background-repeat:no-repeat;
margin: 0 auto;
}

Answer 1

Since the elements are inline-block, you could use vertical-align:top to align them as desired. It's worth noting that the default property value is baseline; this explains why they were behaving as they were. UPDATED EXAMPLE HERE
.contentColumn60 {
height: 40px;
width: 58%;
border-top: 1px solid #fafafa;
border-bottom: 1px solid #e0e0e0;
border-left: 1px solid #e0e0e0;
display: inline-block;
vertical-align: top;
}
.contentColumn20 {
height: 40px;
width: 20%;
border-top: 1px solid #fafafa;
border-bottom: 1px solid #e0e0e0;
border-left: 1px solid #e0e0e0;
display: inline-block;
vertical-align: top;
}

Answer 2

use overflow:hidden; for content column60,20,10 it works perfect

Answer 3

add a clearfix or use vertical-align:top and overflow:hidden
.contentColumn60:after {
content: "";
display: table;
clear: both;
}