Posisie

Gebruik hierdie snelskrifhulpmiddels om die posisie van 'n element vinnig op te stel.

Op hierdie bladsy

Posisiewaardes

Vinnige posisioneringsklasse is beskikbaar, alhoewel hulle nie reageer nie.

<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>

Rangskik elemente

Rangskik elemente maklik met die randposisioneringshulpmiddels. Die formaat is {property}-{position}.

Waar eiendom een van:

top- vir die vertikale topposisie
start- vir die horisontale leftposisie (in LTR)
bottom- vir die vertikale bottomposisie
end- vir die horisontale rightposisie (in LTR)

Waar posisie een van is:

0- vir 0randposisie
50- vir 50%randposisie
100- vir 100%randposisie

(Jy kan meer posisiewaardes byvoeg deur inskrywings by die $position-valuesSass-kaartveranderlike by te voeg.)

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>

Sentrum elemente

Daarbenewens kan jy ook die elemente sentreer met die transformasienutsklas .translate-middle.

Hierdie klas pas die transformasies translateX(-50%)en translateY(-50%)op die element toe wat, in kombinasie met die randposisioneringshulpmiddels, jou toelaat om 'n element te sentreer.

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>

Deur .translate-middle-xof .translate-middle-yklasse by te voeg, kan elemente slegs in horisontale of vertikale rigting geposisioneer word.

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>

Voorbeelde

Hier is 'n paar werklike voorbeelde van hierdie klasse:

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>

Jy kan hierdie klasse met bestaande komponente gebruik om nuwes te skep. Onthou dat jy die funksionaliteit daarvan kan uitbrei deur inskrywings by die $position-valuesveranderlike te voeg.

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

Kaarte

Verstekposisie-nutswaardes word in 'n Sass-kaart verklaar en dan gebruik om ons nutsprogramme te genereer.

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

Utilities API

Posisie nutsprogramme word verklaar in ons nutsprogramme API in scss/_utilities.scss. Leer hoe om die utilities API te gebruik.

    "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%),
      )
    ),