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දළ විශ්ලේෂණය

ඔතා බහාලුම්, බලගතු ජාල පද්ධතියක්, නම්‍යශීලී මාධ්‍ය වස්තුවක් සහ ප්‍රතිචාරාත්මක උපයෝගිතා පන්ති ඇතුළුව, ඔබේ බූට්ස්ට්‍රැප් ව්‍යාපෘතිය තැබීම සඳහා සංරචක සහ විකල්ප.

බහාලුම්

Bootstrap හි ඇති මූලික පිරිසැලසුම් අංගය බහාලුම් වන අතර අපගේ පෙරනිමි ජාල පද්ධතිය භාවිතා කරන විට අවශ්‍ය වේ . ප්‍රතිචාරාත්මක, ස්ථාවර පළල කන්ටේනරයකින් (එක් එක් කඩඉම් ලක්ෂ්‍යයෙන් එහි max-widthවෙනස්වීම් අදහස් වේ) හෝ ද්‍රව-පළල (එනම් එය 100%සෑම විටම පුළුල් බව) තෝරන්න.

බහාලුම් කූඩු කළ හැකි අතර, බොහෝ පිරිසැලසුම් සඳහා කූඩු සහිත බහාලුමක් අවශ්ය නොවේ.

<div class="container">
  <!-- Content here -->
</div>

Use .container-fluid for a full width container, spanning the entire width of the viewport.

<div class="container-fluid">
  ...
</div>

Responsive breakpoints

Since Bootstrap is developed to be mobile first, we use a handful of media queries to create sensible breakpoints for our layouts and interfaces. These breakpoints are mostly based on minimum viewport widths and allow us to scale up elements as the viewport changes.

Bootstrap primarily uses the following media query ranges—or breakpoints—in our source Sass files for our layout, grid system, and components.

// Extra small devices (portrait phones, less than 576px)
// No media query for `xs` 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) { ... }

Since we write our source CSS in Sass, all our media queries are available via Sass mixins:

// No media query necessary for xs breakpoint as it's effectively `@media (min-width: 0) { ... }`
@include media-breakpoint-up(sm) { ... }
@include media-breakpoint-up(md) { ... }
@include media-breakpoint-up(lg) { ... }
@include media-breakpoint-up(xl) { ... }

// Example: Hide starting at `min-width: 0`, and then show at the `sm` breakpoint
.custom-class {
  display: none;
}
@include media-breakpoint-up(sm) {
  .custom-class {
    display: block;
  }
}

We occasionally use media queries that go in the other direction (the given screen size or smaller):

// Extra small devices (portrait phones, less than 576px)
@media (max-width: 575.98px) { ... }

// Small devices (landscape phones, less than 768px)
@media (max-width: 767.98px) { ... }

// Medium devices (tablets, less than 992px)
@media (max-width: 991.98px) { ... }

// Large devices (desktops, less than 1200px)
@media (max-width: 1199.98px) { ... }

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

Note that since browsers do not currently support range context queries, we work around the limitations of min- and max- prefixes and viewports with fractional widths (which can occur under certain conditions on high-dpi devices, for instance) by using values with higher precision for these comparisons.

Once again, these media queries are also available via Sass mixins:

@include media-breakpoint-down(xs) { ... }
@include media-breakpoint-down(sm) { ... }
@include media-breakpoint-down(md) { ... }
@include media-breakpoint-down(lg) { ... }
// No media query necessary for xl breakpoint as it has no upper bound on its width

// Example: Style from medium breakpoint and down
@include media-breakpoint-down(md) {
  .custom-class {
    display: block;
  }
}

There are also media queries and mixins for targeting a single segment of screen sizes using the minimum and maximum breakpoint widths.

// Extra small devices (portrait phones, less than 576px)
@media (max-width: 575.98px) { ... }

// Small devices (landscape phones, 576px and up)
@media (min-width: 576px) and (max-width: 767.98px) { ... }

// Medium devices (tablets, 768px and up)
@media (min-width: 768px) and (max-width: 991.98px) { ... }

// Large devices (desktops, 992px and up)
@media (min-width: 992px) and (max-width: 1199.98px) { ... }

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

These media queries are also available via Sass mixins:

@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) { ... }

Similarly, media queries may span multiple breakpoint widths:

// Example
// Apply styles starting from medium devices and up to extra large devices
@media (min-width: 768px) and (max-width: 1199.98px) { ... }

The Sass mixin for targeting the same screen size range would be:

@include media-breakpoint-between(md, xl) { ... }

Z-index

Several Bootstrap components utilize z-index, the CSS property that helps control layout by providing a third axis to arrange content. We utilize a default z-index scale in Bootstrap that’s been designed to properly layer navigation, tooltips and popovers, modals, and more.

These higher values start at an arbitrary number, high and specific enough to ideally avoid conflicts. We need a standard set of these across our layered components—tooltips, popovers, navbars, dropdowns, modals—so we can be reasonably consistent in the behaviors. There’s no reason we couldn’t have used 100+ or 500+.

We don’t encourage customization of these individual values; should you change one, you likely need to change them all.

$zindex-dropdown:          1000 !default;
$zindex-sticky:            1020 !default;
$zindex-fixed:             1030 !default;
$zindex-modal-backdrop:    1040 !default;
$zindex-modal:             1050 !default;
$zindex-popover:           1060 !default;
$zindex-tooltip:           1070 !default;

සංරචක තුළ අතිච්ඡාදනය වන මායිම් හැසිරවීමට (උදා, ආදාන කණ්ඩායම්වල බොත්තම් සහ ආදාන), අපි අඩු තනි ඉලක්කම් z-indexඅගයන් 1, 2, සහ 3පෙරනිමි, හොවර් සහ සක්‍රීය තත්වයන් සඳහා භාවිතා කරමු. z-indexhover/focus/active මත, අපි සහෝදර මූලද්‍රව්‍ය මත ඔවුන්ගේ මායිම පෙන්වීමට ඉහළ අගයක් සහිත විශේෂිත මූලද්‍රව්‍යයක් ඉදිරියට ගෙන එන්නෙමු.