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This is basically what I want to achieve:
I want the total page to be 100% height, but when I put the sidebar and body at 100%, the page adds the 40px from the navbar, so I get a scrollbar even when there shouldn't be one.
I got it fixed by using tables, but I'm sure there must be an easier way
<body> <div class="container-fluid"> <div class="navbar"></div> <div class="sidebar"></div> <div class="body"></div> </div> </body> and css what I've got so far:
body, html, .container-fluid, .sidebar, .body { height: 100%; min-height: 100%; } .navbar { height: 40px; position: relative; } 
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Navbar Toggle LabelBootstrap Navbar component is designed for mobile first approach. Therefore, the navbar renders as collapsed on mobile devices. It can be toggled by a hamburger button.
The basic vertical menu in bootstrap is only based on . nav class. In the <ul> tag, class “nav navbar-nav” helps to make menu bar vertical. Explanation: The Default vertical menu in bootstrap takes space otherwise we need to use collapse class.
With Bootstrap, a navigation bar can extend or collapse, depending on the screen size. A standard navigation bar is created with the .navbar class, followed by a responsive collapsing class: .navbar-expand-xl|lg|md|sm (stacks the navbar vertically on extra large, large, medium or small screens).
You'll have to subtract the height of the navbar from the 100%. There are several solutions, many of which will include JavaScript but you won't need that.
1: box-sizing
Give the navbar an absolute position. Then you have the issue of the content of the other elements disappearing below it. Then comes the next trick: add a top-padding the size of the navbar. And the last trick: add box-sizing: border-box; to the .sidebar and .body. For better browser support you also need -moz- and -webkit- prefixes like so: -moz-box-sizing:
Example: Fiddle to box-sizing
2: Actually subtract.
use .body, .sidebar{ height: calc(100% - 40px); Browser support is very minimal for this from what I know less than for box-sizing, so I would recommend the first solution. Calc explained on css-tricks
3: Flexbox(added anno 2015)
You should now probably go with using calc when you know the height but an awesome replacement for using tables is flexbox. This is really my saviour for complex designs in responsive websites. By using one of the best features - flex-shrink: 0 - on the header you can force other elements into adjusting themselves to fill the rest of the container.
An old answer is probably not the best place to write down an extensive guide on flexbox so, again, a great link to css-tricks
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