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Bootstrap/scss/_carousel.scss
Martijn Cuppens 2ad135ebb4 Update z-indices (#29292)
- `.carousel-caption` doesn't need a z-index. There are no non-static element in its containing block (`.carousel-item`)
- The `z-index` of `.carousel-indicators` is way higher than it needs to be (`15`), the highest sibling `z-index` is `1`, so it can be set to `2` to be the top layer.
2019-08-26 09:42:44 +03:00

198 lines
4.7 KiB
SCSS

// Notes on the classes:
//
// 1. .carousel.pointer-event should ideally be pan-y (to allow for users to scroll vertically)
// even when their scroll action started on a carousel, but for compatibility (with Firefox)
// we're preventing all actions instead
// 2. The .carousel-item-left and .carousel-item-right is used to indicate where
// the active slide is heading.
// 3. .active.carousel-item is the current slide.
// 4. .active.carousel-item-left and .active.carousel-item-right is the current
// slide in its in-transition state. Only one of these occurs at a time.
// 5. .carousel-item-next.carousel-item-left and .carousel-item-prev.carousel-item-right
// is the upcoming slide in transition.
.carousel {
position: relative;
}
.carousel.pointer-event {
touch-action: pan-y;
}
.carousel-inner {
position: relative;
width: 100%;
overflow: hidden;
@include clearfix();
}
.carousel-item {
position: relative;
display: none;
float: left;
width: 100%;
margin-right: -100%;
backface-visibility: hidden;
@include transition($carousel-transition);
}
.carousel-item.active,
.carousel-item-next,
.carousel-item-prev {
display: block;
}
.carousel-item-next:not(.carousel-item-left),
.active.carousel-item-right {
transform: translateX(100%);
}
.carousel-item-prev:not(.carousel-item-right),
.active.carousel-item-left {
transform: translateX(-100%);
}
//
// Alternate transitions
//
.carousel-fade {
.carousel-item {
opacity: 0;
transition-property: opacity;
transform: none;
}
.carousel-item.active,
.carousel-item-next.carousel-item-left,
.carousel-item-prev.carousel-item-right {
z-index: 1;
opacity: 1;
}
.active.carousel-item-left,
.active.carousel-item-right {
z-index: 0;
opacity: 0;
@include transition(opacity 0s $carousel-transition-duration);
}
}
//
// Left/right controls for nav
//
.carousel-control-prev,
.carousel-control-next {
position: absolute;
top: 0;
bottom: 0;
z-index: 1;
// Use flex for alignment (1-3)
display: flex; // 1. allow flex styles
align-items: center; // 2. vertically center contents
justify-content: center; // 3. horizontally center contents
width: $carousel-control-width;
color: $carousel-control-color;
text-align: center;
opacity: $carousel-control-opacity;
@include transition($carousel-control-transition);
// Hover/focus state
&:hover,
&:focus {
color: $carousel-control-color;
text-decoration: none;
outline: 0;
opacity: $carousel-control-hover-opacity;
}
}
.carousel-control-prev {
left: 0;
@if $enable-gradients {
background-image: linear-gradient(90deg, rgba($black, .25), rgba($black, .001));
}
}
.carousel-control-next {
right: 0;
@if $enable-gradients {
background-image: linear-gradient(270deg, rgba($black, .25), rgba($black, .001));
}
}
// Icons for within
.carousel-control-prev-icon,
.carousel-control-next-icon {
display: inline-block;
width: $carousel-control-icon-width;
height: $carousel-control-icon-width;
background: no-repeat 50% / 100% 100%;
}
.carousel-control-prev-icon {
background-image: escape-svg($carousel-control-prev-icon-bg);
}
.carousel-control-next-icon {
background-image: escape-svg($carousel-control-next-icon-bg);
}
// Optional indicator pips
//
// Add an ordered list with the following class and add a list item for each
// slide your carousel holds.
.carousel-indicators {
position: absolute;
right: 0;
bottom: 0;
left: 0;
z-index: 2;
display: flex;
justify-content: center;
padding-left: 0; // override <ol> default
// Use the .carousel-control's width as margin so we don't overlay those
margin-right: $carousel-control-width;
margin-left: $carousel-control-width;
list-style: none;
li {
box-sizing: content-box;
flex: 0 1 auto;
width: $carousel-indicator-width;
height: $carousel-indicator-height;
margin-right: $carousel-indicator-spacer;
margin-left: $carousel-indicator-spacer;
text-indent: -999px;
cursor: pointer;
background-color: $carousel-indicator-active-bg;
background-clip: padding-box;
// Use transparent borders to increase the hit area by 10px on top and bottom.
border-top: $carousel-indicator-hit-area-height solid transparent;
border-bottom: $carousel-indicator-hit-area-height solid transparent;
opacity: .5;
@include transition($carousel-indicator-transition);
}
.active {
opacity: 1;
}
}
// Optional captions
//
//
.carousel-caption {
position: absolute;
right: (100% - $carousel-caption-width) / 2;
bottom: 20px;
left: (100% - $carousel-caption-width) / 2;
padding-top: 20px;
padding-bottom: 20px;
color: $carousel-caption-color;
text-align: center;
}