Utilisation de points d'arrêt multimédias dans Bootstrap 4-alpha

Question

Dans Bootstrap 3, j'utilise ceci:

 .something {
    padding: 5px;
    @media screen and (min-width: $screen-sm-min) { 
        padding: 20px;
    }
    @media screen and (min-width: $screen-md-min) { 
        padding: 40px;
    }
}
 

Comment puis-je faire la même chose dans Boostrap 4-alpha? Je ne trouve pas d'exemple dans leur documentation. C'est dans variables.scss

 $grid-breakpoints: (
  xs: 0,
  sm: 576px,
  md: 768px,
  lg: 992px,
  xl: 1200px
) !default;
@include _assert-ascending($grid-breakpoints, "$grid-breakpoints");
@include _assert-starts-at-zero($grid-breakpoints);
 

Answer 1

Utiliser le point d'arrêt mixin comme ceci:

.something {
    padding: 5px;
    @include media-breakpoint-up(sm) { 
        padding: 20px;
    }
    @include media-breakpoint-up(md) { 
        padding: 40px;
    }
}

v4 points d'arrêt de référence

v4 alpha6 des points d'arrêt de référence

---

Ci-dessous complète des options et des valeurs.

Point d'arrêt & up (bascule sur la valeur et ci-dessus):

@include media-breakpoint-up(xs) { ... }
@include media-breakpoint-up(sm) { ... }
@include media-breakpoint-up(md) { ... }
@include media-breakpoint-up(lg) { ... }
@include media-breakpoint-up(xl) { ... }

point d'arrêt & valeurs:

// Extra small devices (portrait phones, less than 576px)
// No media query since this is the default in Bootstrap

// Small devices (landscape phones, 576px and up)
@media (min-width: 576px) { ... }

// Medium devices (tablets, 768px and up)
@media (min-width: 768px) { ... }

// Large devices (desktops, 992px and up)
@media (min-width: 992px) { ... }

// Extra large devices (large desktops, 1200px and up)
@media (min-width: 1200px) { ... }

point d'arrêt & down (bascule sur la valeur et vers le bas):

@include media-breakpoint-down(xs) { ... }
@include media-breakpoint-down(sm) { ... }
@include media-breakpoint-down(md) { ... }
@include media-breakpoint-down(lg) { ... }

point d'arrêt & valeurs:

// Extra small devices (portrait phones, less than 576px)
@media (max-width: 575px) { ... }

// Small devices (landscape phones, less than 768px)
@media (max-width: 767px) { ... }

// Medium devices (tablets, less than 992px)
@media (max-width: 991px) { ... }

// Large devices (desktops, less than 1200px)
@media (max-width: 1199px) { ... }

// Extra large devices (large desktops)
// No media query since the extra-large breakpoint has no upper bound on its width

point d'arrêt uniquement:

@include media-breakpoint-only(xs) { ... }
@include media-breakpoint-only(sm) { ... }
@include media-breakpoint-only(md) { ... }
@include media-breakpoint-only(lg) { ... }
@include media-breakpoint-only(xl) { ... }

point d'arrêt uniquement des valeurs (basculer entre les valeurs uniquement):

// Extra small devices (portrait phones, less than 576px)
@media (max-width: 575px) { ... }

// Small devices (landscape phones, 576px and up)
@media (min-width: 576px) and (max-width: 767px) { ... }

// Medium devices (tablets, 768px and up)
@media (min-width: 768px) and (max-width: 991px) { ... }

// Large devices (desktops, 992px and up)
@media (min-width: 992px) and (max-width: 1199px) { ... }

// Extra large devices (large desktops, 1200px and up)
@media (min-width: 1200px) { ... }

Answer 2

J'ai répondu à une question similaire ici

Comme @Syden l'a dit, les mixins fonctionneront. Une autre option consiste à utiliser SASS map-get comme ceci.

 @media (min-width: map-get($grid-breakpoints, sm)){
  .something {
    padding: 10px;
   }
}

@media (min-width: map-get($grid-breakpoints, md)){
  .something {
    padding: 20px;
   }
}
 

http://www.codeply.com/go/0TU586QNlV