fixed height not working with bootstrap

[Kaliph]

As soon as I add bootstrap to my webpage. I can´t use fixed height for groups anymore.

I have added a jsfiddle.

jsfiddle

[Kaliph]

Can I assist somehow by fixing this? Do you have any idea what is causing this behaviour and how to avoid it? Thankyou

[Kaliph]

I believe uncommenting those lines in bootstrap.js 3.3.7 helped me to reduce the behaviour a little bit. But it is still there.

`* {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
*:before,
*:after {
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}
html {
font-size: 10px;

-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}
body {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
font-size: 14px;
line-height: 1.42857143;
color: #333;
background-color: #fff;
}`