orientation - CSS: Cascading Style Sheets 编辑

The orientation CSS media feature can be used to test the orientation of the viewport (or the page box, for paged media).

Note: This feature does not correspond to device orientation. Opening the soft keyboard on many devices in portrait orientation will cause the viewport to become wider than it is tall, thereby causing the browser to use landscape styles instead of portrait.

Syntax

The orientation feature is specified as a keyword value chosen from the list below.

Keyword values

portrait

The viewport is in a portrait orientation, i.e.,  the height is greater than or equal to the width.

landscape

The viewport is in a landscape orientation, i.e., the width is greater than the height.

Examples

HTML

<div>Box 1</div>
<div>Box 2</div>
<div>Box 3</div>

CSS

body {
  display: flex;
}

div {
  background: yellow;
}

@media (orientation: landscape) {
  body {
    flex-direction: row;
  }
}

@media (orientation: portrait) {
  body {
    flex-direction: column;
  }
}

Result

Specifications

Browser compatibility

BCD tables only load in the browser