Storybook / Utilities Position

Principe

Des classes utilitaires de position sont disponibles mais ne sont pas réactives en fonction des breakpoints.

<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>

Organisation

Il est possible de positionner les éléments par rapport aux bords avec le format {property}-{position}.

Propriétés :

top - pour top
start - pour left
bottom - pour bottom
end - pour right

Positions :

0 - pour 0
50 - pour 50%
100 - pour 100%

<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>

Auto centrage

Il est possible de mieux centrer les éléments en les auto centrant via la classe .translate-middle qui se charge de faire une translation de -50% sur les 2 axes.

<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>

On peut aussi centrer sur un seul axe :

<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>

Quelques exemples

Marker

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

<div class="position-relative py-2 px-4 text-bg-secondary border border-secondary rounded-pill">
    Marker <svg width="1em" height="1em" viewBox="0 0 16 16" class="position-absolute top-100 start-50 translate-middle mt-1" fill="var(--bs-secondary)" 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="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>

<div class="position-relative m-5">
    <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 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>