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Bootstrap/scss/_buttons.scss

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// scss-lint:disable QualifyingElement
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//
// Base styles
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//
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.btn {
display: inline-block;
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font-weight: $btn-font-weight;
line-height: $btn-line-height;
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text-align: center;
white-space: nowrap;
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vertical-align: middle;
cursor: pointer;
user-select: none;
border: $input-btn-border-width solid transparent;
@include button-size($btn-padding-y, $btn-padding-x, $font-size-base, $btn-border-radius);
@include transition(all .2s ease-in-out);
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&,
&:active,
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&.active {
&:focus,
&.focus {
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@include tab-focus();
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}
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}
@include hover-focus {
text-decoration: none;
}
&.focus {
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text-decoration: none;
}
&:active,
&.active {
background-image: none;
outline: 0;
@include box-shadow($btn-active-box-shadow);
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}
&.disabled,
&:disabled {
cursor: $cursor-disabled;
opacity: .65;
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@include box-shadow(none);
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}
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}
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// Future-proof disabling of clicks on `<a>` elements
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a.btn.disabled,
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fieldset[disabled] a.btn {
pointer-events: none;
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}
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//
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// Alternate buttons
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//
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.btn-primary {
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@include button-variant($btn-primary-color, $btn-primary-bg, $btn-primary-border);
}
.btn-secondary {
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@include button-variant($btn-secondary-color, $btn-secondary-bg, $btn-secondary-border);
}
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.btn-info {
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@include button-variant($btn-info-color, $btn-info-bg, $btn-info-border);
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}
.btn-success {
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@include button-variant($btn-success-color, $btn-success-bg, $btn-success-border);
}
.btn-warning {
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@include button-variant($btn-warning-color, $btn-warning-bg, $btn-warning-border);
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}
.btn-danger {
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@include button-variant($btn-danger-color, $btn-danger-bg, $btn-danger-border);
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}
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// Remove all backgrounds
.btn-outline-primary {
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@include button-outline-variant($btn-primary-bg);
}
.btn-outline-secondary {
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@include button-outline-variant($btn-secondary-border);
}
.btn-outline-info {
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@include button-outline-variant($btn-info-bg);
}
.btn-outline-success {
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@include button-outline-variant($btn-success-bg);
}
.btn-outline-warning {
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@include button-outline-variant($btn-warning-bg);
}
.btn-outline-danger {
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@include button-outline-variant($btn-danger-bg);
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}
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//
// Link buttons
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//
// Make a button look and behave like a link
.btn-link {
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font-weight: normal;
color: $link-color;
border-radius: 0;
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&,
&:active,
&.active,
&:disabled {
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background-color: transparent;
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@include box-shadow(none);
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}
&,
&:focus,
&:active {
border-color: transparent;
}
@include hover {
border-color: transparent;
}
@include hover-focus {
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color: $link-hover-color;
text-decoration: $link-hover-decoration;
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background-color: transparent;
}
&:disabled {
@include hover-focus {
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color: $btn-link-disabled-color;
text-decoration: none;
}
}
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}
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//
// Button Sizes
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//
.btn-lg {
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// line-height: ensure even-numbered height of button next to large input
@include button-size($btn-padding-y-lg, $btn-padding-x-lg, $font-size-lg, $btn-border-radius-lg);
}
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.btn-sm {
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// line-height: ensure proper height of button next to small input
@include button-size($btn-padding-y-sm, $btn-padding-x-sm, $font-size-sm, $btn-border-radius-sm);
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}
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//
// Block button
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//
.btn-block {
display: block;
width: 100%;
}
// Vertically space out multiple block buttons
.btn-block + .btn-block {
margin-top: $btn-block-spacing-y;
}
// Specificity overrides
input[type="submit"],
input[type="reset"],
input[type="button"] {
&.btn-block {
width: 100%;
}
}