project/4-project/submission/4 FooBar/sass/_mixins.scss
// --------------------------------------------------
// Clearfix
// --------------------------------------------------

// eg: @include clearfix;
@mixin clearfix() {
    &:before,
    &:after {
        content: " ";
        display: table;
    }

    &:after {
        clear: both;
    }
}


// --------------------------------------------------
// Font
// --------------------------------------------------

// eg: @include font($size: 14px, $style: italic, $weight: 400, $variant: normal, $family: $font-family-base);
@mixin font($size: null, $style: null, $weight: null, $variant: null, $family: null) {
    font-size: $size;
    font-style: $style;
    font-weight: $weight;
    font-variant: $variant;
    font-family: $family;
}


// --------------------------------------------------
// Positioning
// --------------------------------------------------

// eg: @include position(absolute, $top: 5px, $left: 5px);
@mixin position($position, $top: null, $right: null, $bottom: null, $left: null) {
    position: $position;
    top: $top;
    left: $left;
    right: $right;
    bottom: $bottom;
}


// --------------------------------------------------
// Sizing
// --------------------------------------------------

// eg 2: @include size(100%, 1px); */
@mixin size($width, $height: $width) {
    width: $width;
    height: $height;
}


// --------------------------------------------------
// Theme Button
// --------------------------------------------------

// eg: @include button();
@mixin button() {
    position: relative;
    display: inline-block;
    line-height: 1.4;
    text-align: center;
    background-image: none;
    border-style: solid;
    white-space: nowrap;
    vertical-align: middle;
    -ms-touch-action: manipulation;
        touch-action: manipulation;
    cursor: pointer;
    @include user-select(none);

    &:focus,
    &:active:focus,
    &.active:focus,
    &.focus,
    &:active.focus,
    &.active.focus {
        outline: none;
    }

    &:hover {
        @include cubic-transition($delay: 0, $duration: 300ms, $property: (all));
    }

    &:hover,
    &:focus,
    &.focus {
        text-decoration: none;
    }

    &:active,
    &.active {
        background-image: none;
        outline: 0;
    }

    &.disabled,
    &[disabled],
    fieldset[disabled] & {
        cursor: not-allowed;
        box-shadow: none;
        opacity: .65;
        pointer-events: none;
    }
}

// eg: @include button-color($color-base, $color-white, transparent, $color-base, 1px, $color-base, $color-base);
@mixin button-color($btn-color, $btn-color-hover, $btn-bg-color, $btn-bg-hover-color, $btn-border-width, $btn-border-color, $btn-border-hover-color) {
    color: $btn-color;
    background: $btn-bg-color;
    border-color: $btn-border-color;
    border-width: $btn-border-width;

    &:hover,
    &:focus,
    &.focus {
        color: $btn-color-hover;
        background: $btn-bg-hover-color;
        border-color: $btn-border-hover-color;
    }
}

// eg: @include button-size($font-size-14, $font-weight-400, 6px 12px);
@mixin button-size($btn-font-size, $btn-fweight, $btn-padding) {
    font-size: $btn-font-size;
    font-weight: $btn-fweight;
    padding: $btn-padding;
}


// --------------------------------------------------
// User Select
// --------------------------------------------------

/* eg: @include user-select(none); */
@mixin user-select($user-select) {
    -webkit-user-select: ($user-select);
    -moz-user-select: ($user-select);
    -ms-user-select: ($user-select);
    user-select: ($user-select);
}


// --------------------------------------------------
// Placeholder
// --------------------------------------------------

// eg: @include placeholder($color-base);
@mixin placeholder($color: $input-color-placeholder) {
    &::-moz-placeholder           { color: $color; } // Firefox 19+
    &:-ms-input-placeholder       { color: $color; } // Internet Egplorer 10+
    &::-webkit-input-placeholder  { color: $color; } // Safari and Chrome
}


// --------------------------------------------------
// RGBA Background Opacity
// --------------------------------------------------

// eg: @include bg-opacity($color-dark, .2);
@mixin bg-opacity($color, $opacity: 0.3) {
    background: rgba($color, $opacity);
}


// --------------------------------------------------
// Cubic Bezier Transition
// --------------------------------------------------

// eg: @include cubic-transition($delay: 0, $duration: 300ms, $property: (all));
@mixin cubic-transition($delay, $duration, $property) {
    transition: {
        duration: $duration;
        property: $property;
        timing-function: cubic-bezier(.7,1,.7,1);
    }
}


// --------------------------------------------------
// Rotate
// --------------------------------------------------

/* eg: @include rotate(45deg); */
@mixin rotate($degrees) {
    -webkit-transform: rotate($degrees);
    -moz-transform: rotate($degrees);
    transform: rotate($degrees);
}


// --------------------------------------------------
// Translate 3D Transition
// --------------------------------------------------

/* eg: @include translate3d(0,0,0); */
@mixin translate3d($x, $y, $z) {
    -webkit-transform: translate3d($x, $y, $z);
    -moz-transform: translate3d($x, $y, $z);
    transform: translate3d($x, $y, $z);
}


// --------------------------------------------------
// Border Radius
// --------------------------------------------------

/* eg: @include border-radius(3px); */
@mixin border-radius($radius) {
    border-radius: $radius;
}