Posisi

Paké utilitas shorthand ieu pikeun gancang ngonpigurasikeun posisi hiji unsur.

Dina kaca ieu

Nilai posisi

Kelas posisi gancang sayogi, sanaos henteu responsif.

<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>

Susun unsur

Atur elemen gampang jeung Utiliti positioning ujung. formatna nyaeta {property}-{position}.

Dimana harta mangrupikeun salah sahiji:

top- pikeun topposisi nangtung
start- pikeun posisi horizontal left(dina LTR)
bottom- pikeun bottomposisi nangtung
end- pikeun posisi horizontal right(dina LTR)

Dimana posisi mangrupa salah sahiji:

0- pikeun 0posisi ujung
50- pikeun 50%posisi ujung
100- pikeun 100%posisi ujung

(Anjeun tiasa nambihan langkung seueur nilai posisi ku cara nambihan éntri kana $position-valuesvariabel peta 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>

Unsur puseur

Salaku tambahan, anjeun ogé tiasa nyéépkeun unsur-unsur kalayan kelas utiliti transformasi .translate-middle.

Kelas ieu nerapkeun transformasi translateX(-50%)jeung translateY(-50%)unsur nu, dina kombinasi jeung Utiliti positioning ujung, ngidinan Anjeun pikeun puseur mutlak unsur.

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>

Ku nambahkeun .translate-middle-xatawa .translate-middle-ykelas, elemen bisa diposisikan ngan dina arah horizontal atawa vertikal.

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>

Contona

Ieu sababaraha conto kahirupan nyata tina kelas ieu:

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>

Anjeun tiasa nganggo kelas ieu sareng komponén anu tos aya pikeun nyiptakeun anu énggal. Émut yén anjeun tiasa manjangkeun fungsionalitasna ku cara nambihan éntri kana $position-valuesvariabel.

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

Peta

Nilai utilitas posisi standar dinyatakeun dina peta Sass, teras dianggo pikeun ngahasilkeun utilitas urang.

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

Utiliti API

Utiliti posisi dinyatakeun dina API Utiliti kami di scss/_utilities.scss. Diajar kumaha ngagunakeun Utiliti 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%),
      )
    ),