@mixin shake {
    0%,
    100% {
        transform: none;
    }
    20% {
        transform: translate3d(-#{$shake}, -#{$shake}, 0);
    }
    40% {
        transform: translate3d(#{$shake}, #{$shake}, 0);
    }
    60% {
        transform: translate3d(#{$shake}, -#{$shake}, 0);
    }
    80% {
        transform: translate3d(-#{$shake}, #{$shake}, 0);
    }
}

@mixin shake-horizontally {
    0%,
    100% {
        transform: none;
    }
    25% {
        transform: translate3d(-#{$shake}, 0, 0);
    }
    50% {
        transform: translate3d(#{$shake}, 0, 0);
    }
    75% {
        transform: translate3d(-#{$shake}, 0, 0);
    }
}

@mixin shake-vertically {
    0%,
    100% {
        transform: none;
    }
    25% {
        transform: translate3d(0, -#{$shake}, 0);
    }
    50% {
        transform: translate3d(0, #{$shake}, 0);
    }
    75% {
        transform: translate3d(0, -#{$shake}, 0);
    }
}

@keyframes shake-in {
    @include shake;
}

@keyframes shake-out {
    @include shake;
}

@keyframes shake-horizontally-in {
    @include shake-horizontally;
}

@keyframes shake-horizontally-out {
    @include shake-horizontally;
}

@keyframes shake-vertically-in {
    @include shake-vertically;
}

@keyframes shake-vertically-out {
    @include shake-vertically;
}