React - Component Full Screen (with height 100%)

Ensuring inheritance and viewport heights

To create a truly full-screen component in React, make sure all parent containers up to the root also adopt the intended height. This can be achieved by:

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

Pro Tip: Use the viewport height vh unit to override any parental controls. With vh, the height of the viewport dictates the height of the element.

.fullScreen {
  height: 100vh; /* Because parents just don't understand */
}


Just remember to be cautious when dealing with position: absolute; elements or modals as this can mess with your layouts.

Refining with advanced targeting

Ever tried to style a React Root element directly but found it inaccessible? Or maybe you wanted an uber-global style for all your components?

CSS property selector to the rescue!

body > #root > div {
  height: 100%; /* Target Acquired!  */
}


Going full Bond-style target-specific, you can even avoid the !important rule:

body > #root > .yourSpecificComponent {
  height: 100%; /* This div. This one right here. */
}


A more structured CSS approach helps things run smoothly when working on a large React application. It's all about strong foundations!

Enhancing responsive design and utilising development tools

Responsive full-screen components are the life of the party on all devices. Chrome Developer Tools helps you watch over their shenanigans and see any style bullies live.

@media (orientation: portrait) {
  .fullScreen {
    height: 100vh; /* Portrait of the artist as a young component */
  }
}

@media (orientation: landscape) {
  .fullScreen {
    height: 50vh; /* I can see my house from here! */
  }
}


Always inspect, always adapt - dealing with conflicting styles? The Chrome Dev Tools will turn you into a style detective in no time!

Tips, tricks, and pitfalls

• !important is like a superhero; use it sparingly and only when necessary.
• Nested elements can be bothersome. If you're using percent (%) height, make sure the parent heights play nice too!
• position: absolute; - use it wisely. It's a Jedi power, not toy. It has the power to disrupt the regular document flow.