@mixin fly() {
    -webkit-transition: $transition-base;
    transition: $transition-base;
    &:hover {
        -webkit-transform: $fly !important;
                transform: $fly !important;
    }
}
@mixin fly-sm() {
    -webkit-transition: $transition-base;
    transition: $transition-base;
    &:hover {
        -webkit-transform: $fly-sm !important;
                transform: $fly-sm !important;
    }
}
@mixin fly-lg() {
    -webkit-transition: $transition-base;
    transition: $transition-base;
    &:hover {
        -webkit-transform: $fly-lg !important;
                transform: $fly-lg !important;
    }
}