Tips for creating a div that is consistently 80% of the page height and perfectly square

Question

Tips for creating a div that is consistently 80% of the page height and perfectly square

Sorry if this question seems a bit confusing, but I just can't seem to find the right words to explain it! What I'm trying to achieve is having a div element always be 80% of the height of the page, while also being perfectly square in shape. In other words, I want the width of the div to match that of 80% of the page's height, creating a square shape. Despite my efforts in researching, I haven't been able to find a solution yet. Ideally, I would prefer using CSS only for this task, but I am open to using JavaScript as well if needed. Here is an example of how I envision my layout at different page heights and aspect ratios: MY PAGE LAYOUT

The blue div should always be 80% of the page height and should remain square in shape. I require this functionality because I aim to have a page without any scrollbars, which means the div needs to adjust based on the page height while maintaining a perfect square shape.

Thank you!

html css user-interface responsive

Answer 1

Answer №1

To determine the size of an element dynamically based on the viewport's initial containing block, you can utilize vh where 1vh is equivalent to 1% of the height of the viewport.

Helpful link for understanding CSS length

For implementation, your CSS class would resemble:

.customClass {
  height: 80vh;
  width: 80vh;
}

Answer 2

To determine the size of an element dynamically based on the viewport's initial containing block, you can utilize vh where 1vh is equivalent to 1% of the height of the viewport.

Helpful link for understanding CSS length

For implementation, your CSS class would resemble:

.customClass {
  height: 80vh;
  width: 80vh;
}

Answer 3

Answer №2

You have the option to specify both the width and height using vh units, which corresponds to 1% of the viewport height. In this scenario, it would look like this:

div{
  width:80vh;
  height:80vh;
}

However, this method is not recommended as it can lead to issues if the viewport height exceeds the width, resulting in horizontal scrollbars or hidden content overflowing.

A more effective approach for such situations would be to utilize vmin, which represents 1% of the smaller viewport dimension.

div{
  width:80vMin;
  height:80vMin;
}

Alternatively, you can employ media queries to determine whether the viewport is in landscape (wide) or portrait (tall) mode.

@media screen and (orientation: landscape) {
  div{
    width:80vh;
    height:80vh;
  }
}

@media screen and (orientation: portrait) {
  div{
    width:80vw;
    height:80vw;
   /*or any other value*/
  }
}

Answer 4

You have the option to specify both the width and height using vh units, which corresponds to 1% of the viewport height. In this scenario, it would look like this:

div{
  width:80vh;
  height:80vh;
}

However, this method is not recommended as it can lead to issues if the viewport height exceeds the width, resulting in horizontal scrollbars or hidden content overflowing.

A more effective approach for such situations would be to utilize vmin, which represents 1% of the smaller viewport dimension.

div{
  width:80vMin;
  height:80vMin;
}

Alternatively, you can employ media queries to determine whether the viewport is in landscape (wide) or portrait (tall) mode.

@media screen and (orientation: landscape) {
  div{
    width:80vh;
    height:80vh;
  }
}

@media screen and (orientation: portrait) {
  div{
    width:80vw;
    height:80vw;
   /*or any other value*/
  }
}

Answer 5

Answer №3

.equalSize {
  width: 80vh;
  height: 80vh;
  background-color: red;
}

<div class="equalSize"><div>

You have the option to utilize CSS built-in units like vh (viewport height). Refer here for more information on CSS units

Alternatively, you can achieve equal sizing by using aspect ratio techniques as explained in this guide: Aspect Ratio

Answer 6

.equalSize {
  width: 80vh;
  height: 80vh;
  background-color: red;
}

<div class="equalSize"><div>

You have the option to utilize CSS built-in units like vh (viewport height). Refer here for more information on CSS units

Alternatively, you can achieve equal sizing by using aspect ratio techniques as explained in this guide: Aspect Ratio

Tips for creating a div that is consistently 80% of the page height and perfectly square

Answer №1

Answer №2

Answer №3

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