Make a div containing img take full height - html

Question

This question have been asked a lot on the web. But each try don't suceed
For a Website I need to make a header, I'm using django + boilerplate (I think that's boilerplate should be the cause, as copy paste of my code in js fiddle works, while it doesn't on local).
Here is the HTML I use:
<div id="topbar">
<div id="networking">
<div id="title">
EasyMusik
</div>
<div id="logo">
<img src="{% static "img/icons/myzik.svg" %}" />
</div>
</div>
</div>
And here is the CSS:
#topbar{
display:block;
background-color : #29A329;
position: relative;
float: top;
}
#tobbar div{
height: 100%;
display:inline-block;
}
#networking{
padding-left:25%;
}
#networking div{
display:inline-block;
}
#title{
position: relative;
height:100%;
font-size: 24px;
}
#logo img{
width:100%;
display:block;
float:left;
}
#logo{
position: relative;
height: 100%;
padding-left:15px;
background-color : #FF0000;
}
And I got this result
I want the Red area to fullfill the green one. Wich property should i add/remove to achieve that?
EDIT: Finally managed to get a fiddle:
Fiddle here

Answer 1

This did the worked for me. Though its not your CSS.
CSS:
.parent
{
width:100%;
background-color:Green;
height:50px;
text-align:center;
font-size:24px;
}
.sub
{
width:50px;
background-color:Red;
height:50px;
display: inline-block;
}
.img
{
vertical-align:middle;
padding-top:15px;
}
HTML:
<div class="parent">
Easy Muzik
<div class="sub">
<img alt="" class="img" src="style/img.png" />
</div>
</div>

Answer 2

Give #topbar a height. If you want your child container to be 100% height or width, your parent container has to have a height or width specified. Good luck!
#topbar{
display:block;
background-color : #29A329;
position: relative;
float: top;
height: 200px
}