@mixin clearfix {
    &:after {
        content: "";
        display: table;
        clear: both;
    }
}

@mixin transition($transition...) {
    -moz-transition:    $transition;
    -o-transition:      $transition;
    -webkit-transition: $transition;
    transition:         $transition;
}

@mixin rotate($deg) {    
    -webkit-transform: rotate($deg);
    -moz-transform: rotate($deg);
    -o-transform: rotate($deg);
    -ms-transform: rotate($deg);
    transform: rotate($deg);
}

@mixin scale($deg) {    
    -webkit-transform: scale($deg);
    -moz-transform: scale($deg);
    -o-transform: scale($deg);
    -ms-transform: scale($deg);
    transform: scale($deg);
}

@mixin opacity($opacity) {
    opacity: $opacity;
    $opacity-ie: $opacity * 100;
    filter: alpha(opacity=$opacity-ie);
  }

@mixin background-gradient-top2bottom($start-color, $end-color) {
    background-color: $start-color;
    background-image: -webkit-gradient(linear, left top, left bottom, from($start-color), to($end-color));
    background-image: -webkit-linear-gradient(top, $start-color, $end-color);
    background-image:    -moz-linear-gradient(top, $start-color, $end-color);
    background-image:     -ms-linear-gradient(top, $start-color, $end-color);
    background-image:      -o-linear-gradient(top, $start-color, $end-color);
    background-image:         linear-gradient(to bottom, $start-color, $end-color);
    filter:            progid:DXImageTransform.Microsoft.gradient(startColorstr='#{$start-color}', endColorstr='#{$end-color}');
}

@mixin background-gradient-left2right($start-color, $end-color) {
    background-color: $start-color;
    background-image: -webkit-gradient(linear, left top, right top, from($start-color), to($end-color));
    background-image: -webkit-linear-gradient(left, $start-color, $end-color);
    background-image:    -moz-linear-gradient(left, $start-color, $end-color);
    background-image:     -ms-linear-gradient(left, $start-color, $end-color);
    background-image:      -o-linear-gradient(left, $start-color, $end-color);
    background-image:         linear-gradient(left, $start-color, $end-color);
    filter:            progid:DXImageTransform.Microsoft.gradient(startColorstr='#{$start-color}', endColorstr='#{$end-color}', gradientType='1');
}

@mixin shadow($value) {
    -webkit-box-shadow: $value;
    -moz-box-shadow: $value;
    box-shadow: $value;
}

@mixin border-radius($val) {
    -moz-border-radius: $val;
    -webkit-border-radius: $val;
    border-radius: $val;
}

@mixin border-radius-top($val) {
    -moz-border-radius-topleft: $val;
    -webkit-border-top-left-radius: $val;
    border-top-left-radius: $val;
    -moz-border-radius-topright: $val;
    -webkit-border-top-right-radius: $val;
    border-top-right-radius: $val;
}

@mixin border-radius-bottom($val) {
    -moz-border-radius-bottomleft: $val;
    -webkit-border-bottom-left-radius: $val;
    border-bottom-left-radius: $val;
    -moz-border-radius-bottomright: $val;
    -webkit-border-bottom-right-radius: $val;
    border-bottom-right-radius: $val;
}

@mixin input-placeholder($color) {
    &::-webkit-input-placeholder {color: $color}
    &:-moz-placeholder           {color: $color}
    &::-moz-placeholder          {color: $color}
    &:-ms-input-placeholder      {color: $color}
}