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

@mixin border-bottom-left-radius ($radius) {
    -webkit-border-bottom-left-radius: $radius;
    border-bottom-left-radius: $radius;
}

@mixin border-bottom-right-radius ($radius) {
    -webkit-border-bottom-right-radius: $radius;
    border-bottom-right-radius: $radius;
}

@mixin border-top-left-radius ($radius) {
    -webkit-border-top-left-radius: $radius;
    border-top-left-radius: $radius;
}

@mixin border-top-right-radius ($radius) {
    -webkit-border-top-right-radius: $radius;
    border-top-right-radius: $radius;
}