Position

Use these shorthand utilities for quickly configuring the position of an element.

Position values

Quick positioning classes are available, though they are not responsive.

<div class="position-static">...</div>
<div class="position-relative">...</div>
<div class="position-absolute">...</div>
<div class="position-fixed">...</div>
<div class="position-sticky">...</div>

Fixed top

Position an element at the top of the viewport, from edge to edge. Be sure you understand the ramifications of fixed position in your project; you may need to add additional CSS.

<div class="fixed-top">...</div>

Fixed bottom

Position an element at the bottom of the viewport, from edge to edge. Be sure you understand the ramifications of fixed position in your project; you may need to add additional CSS.

<div class="fixed-bottom">...</div>

Sticky top

Position an element at the top of the viewport, from edge to edge, but only after you scroll past it.

<div class="sticky-top">...</div>

Sticky bottom

Position an element at the bottom of the viewport, from edge to edge, but only after you scroll past it.

<div class="sticky-bottom">...</div>

Responsive sticky top

Responsive variations also exist for .sticky-top utility.

<div class="small:sticky-top">Stick to the top on viewports sized SM (small) or wider</div>
<div class="medium:sticky-top">Stick to the top on viewports sized MD (medium) or wider</div>
<div class="large:sticky-top">Stick to the top on viewports sized LG (large) or wider</div>
<div class="xlarge:sticky-top">Stick to the top on viewports sized XL (extra-large) or wider</div>
<div class="2xlarge:sticky-top">Stick to the top on viewports sized XXL (extra-extra-large) or wider</div>

Responsive sticky bottom

Responsive variations also exist for .sticky-bottom utility.

<div class="small:sticky-bottom">Stick to the bottom on viewports sized SM (small) or wider</div>
<div class="medium:sticky-bottom">Stick to the bottom on viewports sized MD (medium) or wider</div>
<div class="large:sticky-bottom">Stick to the bottom on viewports sized LG (large) or wider</div>
<div class="xlarge:sticky-bottom">Stick to the bottom on viewports sized XL (extra-large) or wider</div>
<div class="2xlarge:sticky-bottom">Stick to the bottom on viewports sized XXL (extra-extra-large) or wider</div>

Arrange elements

Arrange elements easily with the edge positioning utilities. The format is {property}-{position}.

Where property is one of:

top - for the vertical top position
start - for the horizontal left position (in LTR)
bottom - for the vertical bottom position
end - for the horizontal right position (in LTR)

Where position is one of:

0 - for 0 edge position
50 - for 50% edge position
100 - for 100% edge position

(You can add more position values by adding entries to the $position-values Sass map variable.)

html

<div class="position-relative">
  <div class="position-absolute top-0 start-0"></div>
  <div class="position-absolute top-0 end-0"></div>
  <div class="position-absolute top-50 start-50"></div>
  <div class="position-absolute bottom-50 end-50"></div>
  <div class="position-absolute bottom-0 start-0"></div>
  <div class="position-absolute bottom-0 end-0"></div>
</div>

Center elements

In addition, you can also center the elements with the transform utility class .translate-middle.

This class applies the transformations translateX(-50%) and translateY(-50%) to the element which, in combination with the edge positioning utilities, allows you to absolute center an element.

html

<div class="position-relative">
  <div class="position-absolute top-0 start-0 translate-middle"></div>
  <div class="position-absolute top-0 start-50 translate-middle"></div>
  <div class="position-absolute top-0 start-100 translate-middle"></div>
  <div class="position-absolute top-50 start-0 translate-middle"></div>
  <div class="position-absolute top-50 start-50 translate-middle"></div>
  <div class="position-absolute top-50 start-100 translate-middle"></div>
  <div class="position-absolute top-100 start-0 translate-middle"></div>
  <div class="position-absolute top-100 start-50 translate-middle"></div>
  <div class="position-absolute top-100 start-100 translate-middle"></div>
</div>

By adding .translate-middle-x or .translate-middle-y classes, elements can be positioned only in horizontal or vertical direction.

html

<div class="position-relative">
  <div class="position-absolute top-0 start-0"></div>
  <div class="position-absolute top-0 start-50 translate-middle-x"></div>
  <div class="position-absolute top-0 end-0"></div>
  <div class="position-absolute top-50 start-0 translate-middle-y"></div>
  <div class="position-absolute top-50 start-50 translate-middle"></div>
  <div class="position-absolute top-50 end-0 translate-middle-y"></div>
  <div class="position-absolute bottom-0 start-0"></div>
  <div class="position-absolute bottom-0 start-50 translate-middle-x"></div>
  <div class="position-absolute bottom-0 end-0"></div>
</div>

Examples

Here are some real life examples of these classes:

Marker

html

<button type="button" class="button primary position-relative">
  Mails <span class="position-absolute top-0 start-100 translate-middle badge rounded-pill bg-contrast fg-secondary">+99 <span class="visually-hidden">unread messages</span></span>
</button>

<div class="position-relative py-xsmall px-large bg-inverse fg-inverse border rounded-circle">
  Marker <svg width="1em" height="1em" viewBox="0 0 16 16" class="position-absolute top-100 start-50 translate-middle mt-2xsmall" fill="var(--cx-bg-inverse)" xmlns="http://www.w3.org/2000/svg" aria-hidden="true"><path d="M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z"/></svg>
</div>

<button type="button" class="button primary position-relative">
  Alerts <span class="position-absolute top-0 start-100 translate-middle badge border border-light rounded-circle bg-danger p-xsmall"><span class="visually-hidden">unread messages</span></span>
</button>

You can use these classes with existing components to create new ones. Remember that you can extend its functionality by adding entries to the $position-values variable.

html

<div class="position-relative m-large">
  <div class="progress" role="progressbar" aria-label="Progress" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100" style="height: 1px;">
    <div class="progress-bar" style="width: 50%"></div>
  </div>
  <button type="button" class="position-absolute top-0 start-0 translate-middle button small primary rounded-pill" style="width: 2rem; height:2rem;">1</button>
  <button type="button" class="position-absolute top-0 start-50 translate-middle button small primary rounded-pill" style="width: 2rem; height:2rem;">2</button>
  <button type="button" class="position-absolute top-0 start-100 translate-middle button small secondary rounded-pill" style="width: 2rem; height:2rem;">3</button>
</div>

CSS

Sass maps

Default position utility values are declared in a Sass map, then used to generate our utilities.

scss/_variables.scss

$position-values: (
  0: 0,
  25: 25%,
  50: 50%,
  75: 75%,
  100: 100%
);

Sass utilities API

Position utilities are declared in our utilities API in scss/_utilities.scss. Learn how to use the utilities API.

scss/utilities/_positioning.scss

"position": (
  property: position,
  values: static relative absolute fixed sticky
),
"top": (
  property: top,
  values: $position-values
),
"bottom": (
  property: bottom,
  values: $position-values
),
"start": (
  property: left,
  class: start,
  values: $position-values
),
"end": (
  property: right,
  class: end,
  values: $position-values
),
"translate-middle": (
  property: transform,
  class: translate-middle,
  values: (
    null: translate(-50%, -50%),
    x: translateX(-50%),
    y: translateY(-50%),
  )
),