React - Component Full Screen (with height 100%)

I'm stuck with displaying a React component named "home" that take 100% of the height of my screen. Whatever I use CSS or React inline style it doesn't work.

In the example below, html, body and #app are set to height: 100% in CSS. For .home I used inline style (but whatever I used CSS or inline style is the same): The issue seems to come from <div data-reactroot data-reactid='1'> that is not set with height: 100%.

If I hacked it with Chrome developer tool, it's work:

So what is the proper way to display a full height component in React ?

Any help is welcome :)

html, body, #app, #app>div {
  height: 100%
}

This will ensure all the chain to be height: 100%

You could also do:

body > #root > div {
  height: 100vh;
}

try <div style = {{height:"100vh"}}> </div>

It annoys me for days. And finally I make use of the CSS property selector to solve it.

[data-reactroot] 
        {height: 100% !important; }

I managed this with a css class in my app.css

.fill-window {
    height: 100%;
    position: absolute;
    left: 0;
    width: 100%;
    overflow: hidden;
}

Apply it to your root element in your render() method

render() {
   return ( <div className="fill-window">{content}</div> );
}

Or inline

render() {
   return (
      <div style={{ height: '100%', position: 'absolute', left: '0px', width: '100%', overflow: 'hidden'}}>
          {content}
      </div>
   );
}

Despite using of React here - elements layout is completely html/css feature.

The root cause of the issue is in how height property in css works. When you are using relative values for height (in %) - this means that height will be set in relation to its parent.

So if you have a structure like html > body > div#root > div.app - to make div.app 100% height all its ancestors should have 100% height. You may play with next example:

html {
  height: 100%;
}

body {
  height: 100%;
}

div#root {
  height: 100%; /* remove this line to see div.app is no more 100% height */
  background-color: indigo;
  padding: 0 30px;
}

div.app {
  height: 100%;
  background-color: cornsilk;
}

<div id="root">
  <div class="app"> I will be 100% height if my parents are </div>
</div>

Few arguments:

• Usage of !important - despite some time this feature is useful in ~95% of cases, it indicates a poor structure of html/css. Also, this is not a solution to the current problem.
• Why not position: absolute. Property positon is designed to change how the element will be rendered in relation to (own position - relative, viewport - fixed, nearest parent whos position is not static - absolute). Ans despite position: absolute; top: 0; right: 0; bottom: 0; left: 0; will result in the same look - it also pushes you to change parents position to something not static - so you need to maintain 2 elements. That also causes parent div be collapsed in a line (0-height), and inner - full screen. That makes confusion in element inspector.

#app {
  height: 100%;
  min-height: 100vh;
}

Always full height of view min

While this may not be the ideal answer but try this:

style={{top:'0', bottom:'0', left:'0', right:'0', position: 'absolute'}}

It keeps the size attached to borders which is not what you want but gives you somewhat same effect.

body{
  height:100%
}

#app div{
  height:100%
}

this works for me..

I had the same issue displaying my side navigation panel height to 100%.

My steps to fix it was to:

In the index.css file ------

.html {
   height: 100%;
}
.body {
   height:100%;
}

In the sidePanel.css (this was giving me issues):

.side-panel {
   height: 100%;
   position: fixed; <--- this is what made the difference and scaled to 100% correctly
}

Other attributes were taken out for clarity, but I think the issue lies with scaling the height to 100% in nested containers like how you are trying to scale height in your nested containers. The parent classes height will need to be applied the 100%. - What i'm curious about is why fixed: position corrects the scale and fails without it; this is something i'll learn eventually with some more practice.

I've been working with react for a week now and i'm a novice to web developing, but I wanted to share a fix that I discovered with scaling height to 100%; I hope this helps you or anyone who has a similar issue. Good luck!

<div style={{ height: "100vh", background: "#2d405f" }}>
   <Component 1 />
   <Component 2 />
</div>

Create a div with full screen with background color #2d405f

For a project using CRNA i use this in index.css

html, body, #root {
  height: 100%;
}

and then in my App.css i use this

.App {
  height: 100%;
}

and also set height to 100% for a div within App if there is one eg-

.MainGridContainer {
  display: grid;
  width: 100%;
  height:100%;
  grid-template-columns: 1fr 3fr;
  grid-template-rows: 50px auto;
}

Adding this in the index.html head worked for me:

<style>
    html, body, #app, #app>div { position: absolute; width: 100% !important; height: 100% !important; }
</style>

I had trouble until i used the inspector and realized react puts everything inside a div with id='root' granting that 100% height along with body and html worked for me.

CRA has a #root div to which we render our react app, so it should also be considered a parent div and give appropriate height according to your need. This answer is based on my experience with a similar situation and giving 100% height to #root helped me fix the height issue with one of it's child element.

This depends on the layout of your app, in my case the child was not able to takeup the given height because #root(parent) div had no specified height

Try it to solve your problem

<div style = {{height:"100vh"}}> </div>

try using !important in height. It is probably because of some other style affecting your html body.

{ height : 100% !important; }

also you can give values in VP which will set height to viee port pixel you mention likeheight : 700vp; but this wont be portable.