@mixin border-radius($radius: 5px) {
  -webkit-border-radius: $radius;
  -moz-border-radius: $radius;
  border-radius: $radius;
}

@mixin border-top-radius($radius) {
  -webkit-border-top-right-radius: $radius;
  border-top-right-radius: $radius;
  -webkit-border-top-left-radius: $radius;
  border-top-left-radius: $radius;
  background-clip: padding-box;
}

@mixin border-right-radius($radius) {
  -webkit-border-bottom-right-radius: $radius;
  border-bottom-right-radius: $radius;
  -webkit-border-top-right-radius: $radius;
  border-top-right-radius: $radius;
  background-clip: padding-box;
}

@mixin border-bottom-radius($radius) {
  -webkit-border-bottom-right-radius: $radius;
  border-bottom-right-radius: $radius;
  -webkit-border-bottom-left-radius: $radius;
  border-bottom-left-radius: $radius;
  background-clip: padding-box;
}

@mixin border-left-radius($radius) {
  -webkit-border-bottom-left-radius: $radius;
  border-bottom-left-radius: $radius;
  -webkit-border-top-left-radius: $radius;
  border-top-left-radius: $radius;
  background-clip: padding-box;
}

@mixin clearfix() {
  &:after {
    content: '';
    display: table;
    clear: both;
  }
}

%clearfix {
  &:after {
    content: '';
    display: table;
    clear: both;
  }
}

@mixin box-sizing($sizing: border-box) {
  -webkit-box-sizing: $sizing;
  -moz-box-sizing: $sizing;
  box-sizing: $sizing;
}

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

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

@mixin keyframes($animation-name) {
  @-webkit-keyframes #{$animation-name} {
    @content;
  }
  @-moz-keyframes #{$animation-name} {
    @content;
  }
  @-ms-keyframes #{$animation-name} {
    @content;
  }
  @-o-keyframes #{$animation-name} {
    @content;
  }
  @keyframes #{$animation-name} {
    @content;
  }
}

@mixin animation($str) {
  -webkit-animation: #{$str};
  -moz-animation: #{$str};
  -ms-animation: #{$str};
  -o-animation: #{$str};
  animation: #{$str};
}

// Opacity Mixin
@mixin opacity($value: 0.5) {
  opacity: $value;
  -ms-filter: 'progid:DXImageTransform.Microsoft.Alpha(Opacity=” $value * 100 “)';
  filter: alpha(opacity=$value * 100);
  zoom: 1;
}

@mixin no-select() {
  -webkit-touch-callout: none; /* iOS Safari */
  -webkit-user-select: none; /* Chrome/Safari/Opera */
  -khtml-user-select: none; /* Konqueror */
  -moz-user-select: none; /* Firefox */
  -ms-user-select: none; /* Internet Explorer/Edge */
  user-select: none;
}