direction

direction: ltr;

direction: rtl;

<section class="default-example" id="default-example">
  <div class="transition-all" id="example-element">
    <div>1</div>
    <div>2</div>
    <div>3</div>
    <div>4</div>
  </div>
</section>

#example-element {
  border: 1px solid #c5c5c5;
  padding: 0.75em;
  width: 80%;
  max-height: 300px;
  display: flex;
}

#example-element > div {
  background-color: rgba(0, 0, 255, 0.2);
  border: 3px solid blue;
  margin: 10px;
  flex: 1;
}

Заметьте, что направление текста обычно задано в документе (т.е. с помощью HTML's dir attribute), а не посредством прямого использования свойства direction.

The property sets the base text direction of block-level elements and the direction of embeddings created by the unicode-bidi property. It also sets the default alignment of text, block-level elements, and the direction that cells flow within a table row.

Unlike the dir attribute in HTML, the direction property is not inherited from table columns into table cells, since CSS inheritance follows the document tree, and table cells are inside of rows but not inside of columns.

The direction and unicode-bidi properties are the two only properties which are not affected by the all shorthand property.

ltr

Text and other elements go from left to right. This is the default value.

rtl

Text and other elements go from right to left.

For the direction property to have any effect on inline-level elements, the unicode-bidi property's value must be embed or override.

direction = 
  ltr  |
  rtl  

• unicode-bidi
• writing-mode