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Bootstrap/scss/_scaffolding.scss

162 lines
3.5 KiB
SCSS

//
// Scaffolding
// --------------------------------------------------
// Reset the box-sizing
//
// Heads up! This reset may cause conflicts with some third-party widgets.
// For recommendations on resolving such conflicts, see
// http://getbootstrap.com/getting-started/#third-box-sizing
// Credit: Jon Neal & CSS-Tricks
// http://css-tricks.com/inheriting-box-sizing-probably-slightly-better-best-practice/
html {
box-sizing: border-box;
}
*,
*:before,
*:after {
box-sizing: inherit;
}
// Make viewport responsive
//
// @viewport is supposed to eventually replace <meta name="viewport">. It's manually prefixed for forward-compatibility.
//
// @viewport is also needed because IE 10+ doesn't honor <meta name="viewport"> in some cases.
// (See http://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/)
//
// However, `device-width` is broken on IE 10 on Windows (Phone) 8,
// (see http://timkadlec.com/2013/01/windows-phone-8-and-device-width/
// and https://github.com/twbs/bootstrap/issues/10497)
// and the fix for that involves a snippet of JavaScript to sniff the user agent and apply some conditional CSS.
// See http://getbootstrap.com/getting-started/#support-ie10-width for the relevant hack.
@-moz-viewport { width: device-width; }
@-ms-viewport { width: device-width; }
@-o-viewport { width: device-width; }
@-webkit-viewport { width: device-width; }
@viewport { width: device-width; }
// Body reset
html {
font-size: $font-size-root;
-webkit-tap-highlight-color: rgba(0,0,0,0);
}
body {
font-family: $font-family-base;
font-size: $font-size-base;
line-height: $line-height-base;
color: $text-color;
background-color: $body-bg;
}
// Reset fonts for relevant elements
input,
button,
select,
textarea {
font-family: inherit;
font-size: inherit;
line-height: inherit;
}
// Links
a {
color: $link-color;
text-decoration: none;
@include hover-focus {
color: $link-hover-color;
text-decoration: $link-hover-decoration;
}
&:focus {
@include tab-focus();
}
}
// Images
img {
vertical-align: middle;
}
// Responsive images (ensure images don't scale beyond their parents)
.img-responsive {
@include img-responsive();
}
// Rounded corners
.img-rounded {
@include border-radius($border-radius-lg);
}
// Image thumbnails
.img-thumbnail {
padding: $thumbnail-padding;
line-height: $line-height-base;
background-color: $thumbnail-bg;
border: 1px solid $thumbnail-border;
border-radius: $thumbnail-border-radius;
transition: all .2s ease-in-out;
@include box-shadow(0 1px 2px rgba(0,0,0,.075));
// Keep them at most 100% wide
@include img-responsive(inline-block);
}
// Perfect circle
.img-circle {
border-radius: 50%; // set radius in percents
}
// Horizontal rules
hr {
margin-top: $spacer;
margin-bottom: $spacer;
border: 0;
border-top: .0625rem solid $hr-border;
}
// Only display content to screen readers
//
// See: http://a11yproject.com/posts/how-to-hide-content/
.sr-only {
position: absolute;
width: 1px;
height: 1px;
padding: 0;
margin: -1px;
overflow: hidden;
clip: rect(0,0,0,0);
border: 0;
}
// Use in conjunction with .sr-only to only display content when it's focused.
// Useful for "Skip to main content" links; see http://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
// Credit: HTML5 Boilerplate
.sr-only-focusable {
&:active,
&:focus {
position: static;
width: auto;
height: auto;
margin: 0;
overflow: visible;
clip: auto;
}
}