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Significado a través de background-colory añadir decoración con gradientes.

Color de fondo

Contextual qillqa llimp'i clasekunaman rikch'akuq, huk elementop qhipanta mayqin contextual clase kaqmanpas churay. Qhipa yanapakuykuna mana churanchu , chayrayku wakin kutikunapi color.text-* llimp'i yanapakuykunata llamk'achiyta munanki .

.bg-primaria nisqa
.bg-iskay kaq
.bg-allin ruway
.bg-peligro nisqa
.bg-yachay
.bg-manta willakuy
.bg-k'anchay
.bg-tutayaq
.bg-cuerpo
.bg-yuraq
.bg-sut'i kaq
<div class="p-3 mb-2 bg-primary text-white">.bg-primary</div>
<div class="p-3 mb-2 bg-secondary text-white">.bg-secondary</div>
<div class="p-3 mb-2 bg-success text-white">.bg-success</div>
<div class="p-3 mb-2 bg-danger text-white">.bg-danger</div>
<div class="p-3 mb-2 bg-warning text-dark">.bg-warning</div>
<div class="p-3 mb-2 bg-info text-dark">.bg-info</div>
<div class="p-3 mb-2 bg-light text-dark">.bg-light</div>
<div class="p-3 mb-2 bg-dark text-white">.bg-dark</div>
<div class="p-3 mb-2 bg-body text-dark">.bg-body</div>
<div class="p-3 mb-2 bg-white text-dark">.bg-white</div>
<div class="p-3 mb-2 bg-transparent text-dark">.bg-transparent</div>

Gradiente de fondo

Huk clase yapaspa .bg-gradient, huk lineal gradiente yapasqa qhipa siq'i hina qhipa kaqkunaman. Kay gradienteqa qallarikun huk yaqa chuya yuraqwan chaymi chinkapun urayman.

¿Necesitankichu huk gradiente nisqa CSS ruwasqaykipi? Yapaylla background-image: var(--bs-gradient);.

.bg-primaria.bg-gradiente nisqa
.bg-iskay kaq.bg-gradiente
.bg-allin.bg-gradiente nisqa
.bg-peligro.bg-gradiente nisqa
.bg-willakuy.bg-gradiente
.bg-info.bg-gradiente nisqa
.bg-k'anchay.bg-gradiente nisqa
.bg-tutayaq.bg-gradiente nisqa

Opacidad

v5.1.0 nisqapi yapasqa

v5.1.0 kaqmanta, background-coloryanapakuykuna Sass kaqwan ruwasqa kanku CSS tikraqkunawan. Kayqa chiqa pacha llimp'i tikraykunata mana huñusqa chaymanta alfa transparencia dinámica tikraykunata saqin.

Imayna llamkan

Yuyaykuy ñawpaqmanta churasqa .bg-successutilidadniykupi.

.bg-success {
  --bs-bg-opacity: 1;
  background-color: rgba(var(--bs-success-rgb), var(--bs-bg-opacity)) !important;
}

Huk RGB laya ñuqaykupa --bs-success(chaniwan 25, 135, 84) CSS tikraqniykumanta llamk'achiyku chaymanta huk iskay kaq CSS tikraq, --bs-bg-opacity, alfa sut'i kaqpaq k'askachiyku (huk ñawpaqmanta chaniwan 1huk kiti CSS tikraqman gracias). Chayqa niyta munan mayk'aqllapas .bg-successkunan llamk'achkanki, yupasqa colorchaninniyki rgba(25, 135, 84, 1). Sapa .bg-*clase ukhupi kiti CSS tikraq herencia sasachakuykunata harkan chayrayku yanapakuykunamanta anidado instanciakuna mana kikinmanta huk tikrasqa alfa sut'iyuqchu kanku.

Qatina

Chay opacidadta tikranaykipaq, --bs-bg-opacitysapanchasqa estilokuna utaq chiru ukhupi estilokuna kaqnintakama llalliy.

Kayqa ñawpaqmanta ruwasqa allin ruway qhipa kaq
Kayqa 50% opacidad atipay qhipa kaq
<div class="bg-success p-2 text-white">This is default success background</div>
<div class="bg-success p-2" style="--bs-bg-opacity: .5;">This is 50% opacity success background</div>

Utaq, mayqin yanapakuykunamantapas akllay .bg-opacity:

Kayqa ñawpaqmanta ruwasqa allin ruway qhipa kaq
Kayqa 75% opacidad allin ruway qhipa kaq
Kayqa 50% opacidad atipay qhipa kaq
Kayqa 25% opacidad allin ruway qhipa kaq
Kayqa 10% opacidad atipay qhipa kaq
<div class="bg-success p-2 text-white">This is default success background</div>
<div class="bg-success p-2 text-white bg-opacity-75">This is 75% opacity success background</div>
<div class="bg-success p-2 text-dark bg-opacity-50">This is 50% opacity success background</div>
<div class="bg-success p-2 text-dark bg-opacity-25">This is 25% opacity success background</div>
<div class="bg-success p-2 text-dark bg-opacity-10">This is 10% opacity success background</div>

Sass

Kay qatiq Sass ruwanakunamanta yapasqa, qhaway ñawiriyta ñuqaykumanta churasqa CSS sapanchasqa propiedades kaqmanta (aka CSS tikraqkuna) llimp'ikunapaq chaymanta aswan.

Variables nisqakuna

Yaqa llapan background-coloryanapakuykuna tema llimp'iykuwan ruwasqa kanku, musuqmanta asignasqa kay genérico llimp'i paleta variablesniykumanta.

$blue:    #0d6efd;
$indigo:  #6610f2;
$purple:  #6f42c1;
$pink:    #d63384;
$red:     #dc3545;
$orange:  #fd7e14;
$yellow:  #ffc107;
$green:   #198754;
$teal:    #20c997;
$cyan:    #0dcaf0;
$primary:       $blue;
$secondary:     $gray-600;
$success:       $green;
$info:          $cyan;
$warning:       $yellow;
$danger:        $red;
$light:         $gray-100;
$dark:          $gray-900;
$gradient: linear-gradient(180deg, rgba($white, .15), rgba($white, 0));

Gris escala llimp'ikunapas kan, ichataq huk huch'uy huñulla ima yanapakuykunatapas paqarichinapaq llamk'achisqa.

$white:    #fff;
$gray-100: #f8f9fa;
$gray-200: #e9ecef;
$gray-300: #dee2e6;
$gray-400: #ced4da;
$gray-500: #adb5bd;
$gray-600: #6c757d;
$gray-700: #495057;
$gray-800: #343a40;
$gray-900: #212529;
$black:    #000;

Mapa

Chaymanta tema colorkuna huk Sass mapaman churasqa kanku chaymanta chaykuna patapi llalliyta atiykuman yanapakuyniyku, componente modificadorkuna chaymanta aswan ruwanapaq.

$theme-colors: (
  "primary":    $primary,
  "secondary":  $secondary,
  "success":    $success,
  "info":       $info,
  "warning":    $warning,
  "danger":     $danger,
  "light":      $light,
  "dark":       $dark
);

Sass mapa hinapas gris nisqa llimp’ikuna kanmi. Kay mapaqa manam ima yanapakuykunatapas ruwanapaqchu.

$grays: (
  "100": $gray-100,
  "200": $gray-200,
  "300": $gray-300,
  "400": $gray-400,
  "500": $gray-500,
  "600": $gray-600,
  "700": $gray-700,
  "800": $gray-800,
  "900": $gray-900
);

RGB llimp'ikuna huk sapaq Sass mapamanta paqarichisqa:

$theme-colors-rgb: map-loop($theme-colors, to-rgb, "$value");

Hinallataq qhipa llimp'i opacidades chaymanta ruwanku kikin mapankuwan chaymanta chay utilidadkuna API kaqwan tukusqa:

$utilities-bg: map-merge(
  $utilities-colors,
  (
    "black": to-rgb($black),
    "white": to-rgb($white),
    "body": to-rgb($body-bg)
  )
);
$utilities-bg-colors: map-loop($utilities-bg, rgba-css-var, "$key", "bg");

Mixinkuna

No mixins are used to generate our background utilities , ichaqa wakin yapasqa mixins huk situacionkunapaq maypi kikiyki gradientekuna ruwayta munanki.

@mixin gradient-bg($color: null) {
  background-color: $color;

  @if $enable-gradients {
    background-image: var(--#{$variable-prefix}gradient);
  }
}
// Horizontal gradient, from left to right
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
@mixin gradient-x($start-color: $gray-700, $end-color: $gray-800, $start-percent: 0%, $end-percent: 100%) {
  background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent);
}

// Vertical gradient, from top to bottom
//
// Creates two color stops, start and end, by specifying a color and position for each color stop.
@mixin gradient-y($start-color: $gray-700, $end-color: $gray-800, $start-percent: null, $end-percent: null) {
  background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent);
}

@mixin gradient-directional($start-color: $gray-700, $end-color: $gray-800, $deg: 45deg) {
  background-image: linear-gradient($deg, $start-color, $end-color);
}

@mixin gradient-x-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) {
  background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);
}

@mixin gradient-y-three-colors($start-color: $blue, $mid-color: $purple, $color-stop: 50%, $end-color: $red) {
  background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);
}

@mixin gradient-radial($inner-color: $gray-700, $outer-color: $gray-800) {
  background-image: radial-gradient(circle, $inner-color, $outer-color);
}

@mixin gradient-striped($color: rgba($white, .15), $angle: 45deg) {
  background-image: linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
}

API de Utilidades nisqa

Qhipa yanapakuykuna yanapakuyniyku API kaqpi willasqa kachkanku scss/_utilities.scss. Yachay imayna ruwanakuna API llamk'achiyta.

    "background-color": (
      property: background-color,
      class: bg,
      local-vars: (
        "bg-opacity": 1
      ),
      values: map-merge(
        $utilities-bg-colors,
        (
          "transparent": transparent
        )
      )
    ),
    "bg-opacity": (
      css-var: true,
      class: bg-opacity,
      values: (
        10: .1,
        25: .25,
        50: .5,
        75: .75,
        100: 1
      )
    ),