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I have an angular page, home, which is comprised of 2 components and a router-outlet
<div class="home-container">
<header></header>
<sub-header></sub-header>
<router-outlet></router-outlet>
</div>
I want the home-container above to always be, at a minimum, full screen height. The header should show, then the sub-header, then the contents of the router-outlet should always fill up at least the rest of the screen (or more if there's more content of course).
Normally this is easy but it seems the router-outlet is messing it up. Example can be seen http://plnkr.co/edit/56k9ZabLAGujBoX8Lsas , hit run and then click the "Heroes" link to route. In this example I don't want the Heroes div to be taller than the screen, and don't understand why it is.
My styles to accomplish this are. (assume router-outlet is on 'my-page')
html, body {
height: 100%;
}
.home-container {
height: 100%;
}
.my-page {
height: 100%;
}
My expectation here obviously is that home-container is full screen, shows header, shows sub-header, and that my-page then fills in at a minimum the rest of the vertical height.
What is actually happening though, is that there's a scroll bar with available height that appears equal to my header and sub-header.
This plnkr http://plnkr.co/edit/56k9ZabLAGujBoX8Lsas illustrates exactly my meaning. If you click Run and then the link for "Heroes" you will see the router-outlet contents, in this case heroes-list.component, with a green background. I do not understand why the green here is bleeding below the screen when everything is set to 100%
Update I have tried using all manner of different CSS attributes to different levels in this nesting. Including 100vh vs 100%, min-height vs height, and every combination of body/html/home-container/my-page. I have also tried the same with Angular's CSS :host, to the same result of no different
Update2 If I move it out of the element then everything behaves as you'd expect and there's no vertical scroll bar. Something about the router-outlet wrapper adds vertical space somewhere but I cannot figure out where or what is causing it.
Final Update The below answers might be useful for some applications but I ended up just solving it by giving the .my-page a specified height, just doing height: calc(100vh - $headerheight - $subheaderheight) which gets the job done
728
As far as I understand, 100% on a child will be equal to the size of the parents natural height. If you want to fill the space available, you really should be using flex unless you have a requirement to support IE9 and below.
I would update your Anchors to be contained in a div (or another wrapper)
<h1 class="title">Component Router</h1>
<div>
<a [routerLink]="['CrisisCenter']">Crisis Center</a>
<a [routerLink]="['Heroes']">Heroes</a>
</div>
<router-outlet></router-outlet>
I would then utilize flexbox to allow the content to expand as required
.hero-list {
background-color: green;
height: 100%;
overflow:auto
}
undefined {
flex: 1;
}
body, html, my-app {
height: 100%;
}
my-app{
display: flex;
flex-flow: column;
}
Plunker to test: http://plnkr.co/edit/yE1KOZMr1pd5jQKlVYIN?p=preview
On chrome i still have scroll bars due to an 8px margin on body - this can easily be removed with CSS for a scroll free full height experience.
129
There are two causes that make your <body> element taller than 100% of the viewport:
<body> element that come from the browser's built-in styles and usually are 8px. This means that the <body> element will be as tall as the <html> element, but also will have 8px space above it and below it, causing the <html> element to overflow.<h1> element "falls out" from the container due to margin collapsing. This makes the space above the <body> element equal to the default top margin of <h1> (about 21px instead of 8px).Setting zero margin to <body> (part of ToTaTaRi's answer) helps you to solve the 1st issue. To solve the second one, you should make the <body> element or (probably better) the .my-app container establish the new Block Formatting Context. The easiest and most cross-browser way for this is setting the container overflow:hidden (other options are display:flow-root, which works for modern Chrome/Firefox, or column-count:1, which works in IE10+ and all modern browsers, you can compare nearly all the options in this live example).
38
First of all you should reset browser default styles at least somehow like this:
* {
padding: 0;
margin: 0;
box-sizing: border-box;
}
Then you could achive what you want without a flex layout if prefered through splitting the page into a header section and main content section with a preset division... So lets say the heading and the links go together into a container div with i.e. a height of 20% and the main content which is at the moment hold in a tag "undefined" gets a height of 80%, if you now set the height of the app container to 100% or 100vh it should work as expected!
EDIT (because the topic is still open...):
Have you tried this css code like explained above, works like charm!?
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
html, body, my-app {
height: 100%;
height: 100vh;
}
h1 , h1 + div {
height: 10%;
height: 10vh;
}
undefined {
display: block;
background-color: green;
min-height: 80%;
min-height: 80vh;
}
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