Tulaga

Fa'aoga nei fa'aoga fa'apuupuu mo le fa'atulagaina vave o le tulaga o se elemene.

I luga o lenei itulau

Tulaga taua

E avanoa vasega fa'atulagaina vave, e ui lava e le tali mai.

<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>

Faatulaga elemene

Fa'afaigofie ona fa'atulaga elemene fa'atasi ai ma mea fa'aoga tu'u pito. O le faatulagaga o le {property}-{position}.

Afai o meatotino o se tasi o:

toptop- mo le tulaga tuusao
start- mo le tulaga faalava left(i le LTR)
bottombottom- mo le tulaga tuusao
end- mo le tulaga faalava right(i le LTR)

O fea le tulaga o se tasi o:

0- mo 0le tulaga pito
50- mo 50%le tulaga pito
100- mo 100%le tulaga pito

(E mafai ona e fa'aopoopo nisi tulaga fa'atauaina e ala i le fa'aopoopoina o fa'amaumauga i le $position-valuesfa'asologa o fa'afanua Sass.)

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>

Elemene tutotonu

E le gata i lea, e mafai foi ona e totonugalemu elemene ma le suiga aoga vasega .translate-middle.

O lenei vasega e faʻaaogaina suiga translateX(-50%)ma translateY(-50%)i le elemene lea, faʻatasi ma le faʻaogaina o mea e faʻaogaina ai le pito, e mafai ai ona e faʻaulufaleina se elemene.

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>

I le faʻaopoopoina .translate-middle-xpoʻo .translate-middle-yvasega, e mafai ona faʻatulagaina elemene i le faʻataʻitaʻiga poʻo le tuʻu saʻo.

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>

Faataitaiga

O nisi nei o fa'ata'ita'iga moni o le olaga o nei vasega:

html

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

<button type="button" class="btn btn-dark position-relative">
  Marker <svg width="1em" height="1em" viewBox="0 0 16 16" class="position-absolute top-100 start-50 translate-middle mt-1" fill="#212529" xmlns="http://www.w3.org/2000/svg"><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>
</button>

<button type="button" class="btn btn-primary position-relative">
  Alerts <span class="position-absolute top-0 start-100 translate-middle badge border border-light rounded-circle bg-danger p-2"><span class="visually-hidden">unread messages</span></span>
</button>

E mafai ona e faʻaogaina nei vasega ma vaega o loʻo iai e fatu ai ni mea fou. Manatua e mafai ona e faʻalauteleina lona faʻatinoga e ala i le faʻaopoopoina o faʻamaumauga i le $position-valuesfesuiaiga.

html

<div class="position-relative m-4">
  <div class="progress" style="height: 1px;">
    <div class="progress-bar" role="progressbar" aria-label="Progress" style="width: 50%;" aria-valuenow="50" aria-valuemin="0" aria-valuemax="100"></div>
  </div>
  <button type="button" class="position-absolute top-0 start-0 translate-middle btn btn-sm btn-primary rounded-pill" style="width: 2rem; height:2rem;">1</button>
  <button type="button" class="position-absolute top-0 start-50 translate-middle btn btn-sm btn-primary rounded-pill" style="width: 2rem; height:2rem;">2</button>
  <button type="button" class="position-absolute top-0 start-100 translate-middle btn btn-sm btn-secondary rounded-pill" style="width: 2rem; height:2rem;">3</button>
</div>

Sass

Faafanua

O tulaga fa'aoga fa'aletonu e fa'ailoa mai ile fa'afanua Sass, ona fa'aaoga lea e fa'atupu ai a tatou mea aoga.

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

Utilities API

O lo'o fa'aalia tulaga fa'aoga i totonu ole matou fa'aoga API i scss/_utilities.scss. A'oa'o pe fa'afefea ona fa'aoga mea aoga API.

    "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%),
      )
    ),