Pozisyon

Sèvi ak sèvis piblik kout sa yo pou byen vit konfigirasyon pozisyon yon eleman.

Nan paj sa a

Pozisyon valè

Klas pwezante rapid yo disponib, menm si yo pa reponn.

<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>

Ranje eleman yo

Fè aranjman pou eleman fasil ak sèvis piblik yo pwezante kwen. Fòma a se {property}-{position}.

Kote pwopriyete se youn nan:

toptop- pou pozisyon vètikal la
start- pou pozisyon orizontal left(nan LTR)
bottombottom- pou pozisyon vètikal la
end- pou pozisyon orizontal right(nan LTR)

Ki kote pozisyon se youn nan:

0- pou 0pozisyon kwen
50- pou 50%pozisyon kwen
100- pou 100%pozisyon kwen

(Ou ka ajoute plis valè pozisyon lè w ajoute antre nan $position-valuesvaryab kat Sass la.)

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>

Sant eleman

Anplis de sa, ou kapab tou santre eleman yo ak klas sèvis piblik transfòmasyon .translate-middle.

Klas sa a aplike transfòmasyon yo translateX(-50%)ak translateY(-50%)eleman ki, an konbinezon ak sèvis piblik pozisyon kwen yo, pèmèt ou santre absoli yon eleman.

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>

Lè yo ajoute .translate-middle-xoswa .translate-middle-yklas, eleman yo ka pozisyone sèlman nan direksyon orizontal oswa vètikal.

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>

Egzanp yo

Men kèk egzanp lavi reyèl nan klas sa yo:

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>

Ou ka itilize klas sa yo ak eleman ki deja egziste pou kreye nouvo. Sonje ke ou ka pwolonje fonksyonalite li yo lè w ajoute antre nan $position-valuesvaryab la.

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

Kat

Yo deklare valè sèvis piblik pozisyon yo nan yon kat Sass, epi yo itilize yo pou jenere sèvis piblik nou yo.

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

Itilite API

Pozisyon sèvis piblik yo deklare nan API sèvis piblik nou an nan scss/_utilities.scss. Aprann kijan pou itilize API sèvis piblik yo.

    "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%),
      )
    ),