有没有办法使此滑块移动更平稳？

Question

https://codepen.io/sub0-l3/pen/xjPwBP

我真的很喜欢这个滑块，但是想不出办法让您在移动滑块时能平稳地移动？在某些帧中，向右滑动箭头时，滑块先向左滑动，然后向右移动；向左箭头时，反之亦然。

我想知道是否有办法解决这个问题？谢谢！

.move-out-from-left {
    animation: moveOutLeft 0.5s ease-in-out;
}

.move-out-from-right {
    animation: moveOutRight 0.5s ease-in-out;
}

.move-to-position5-from-left {
    animation: moveToP5Left 0.5s ease-in-out;
}

.move-to-position4-from-left {
    animation: moveToP4Left 0.5s ease-in-out;
}

.move-to-position3-from-left {
    animation: moveToP3Left 0.5s ease-in-out;
}

.move-to-position2-from-left {
    animation: moveToP2Left 0.5s ease-in-out;
}


.move-to-position1-from-left{
    animation: moveToP1Left 0.5s ease-in-out;
}

.move-to-position5-from-right{
    animation: moveToP5Right 0.5s ease-in-out;
}
.move-to-position4-from-right{
    animation: moveToP4Right 0.5s ease-in-out;
}
.move-to-position3-from-right{
    animation: moveToP3Right 0.5s ease-in-out;
}
.move-to-position2-from-right{
    animation: moveToP2Right 0.5s ease-in-out;
}
.move-to-position1-from-right{
    animation: moveToP1Right 0.5s ease-in-out;
}

@keyframes moveOutLeft {
    0% {
        transform: scale(0.75) translateX(0%);
        opacity: 1;
    }
    50% {
        transform: scale(0.5) translateX(-150%);
        opacity: 0.5;
    }
    100% {
        transform: scale(0.25) translateX(0%);
        opacity: 0;
    }
}

@keyframes moveOutRight {
    0% {
        transform: scale(0.75) translateX(0%);
        opacity: 1;
    }
    50% {
        transform: scale(0.5) translateX(150%);
        opacity: 0.5;
    }
    100% {
        transform: scale(0.25) translateX(0%);
        opacity: 0;
    }
}


@keyframes moveToP5Left {
    from {
        transform: scale(0.75) translateX(100%);
    }
    to {
        transform: scale(0.75) translateX(0);
    }
}

@keyframes moveToP4Left {
    from {
        transform: scale(0.75) translateX(100%);
    }
    to {
        transform: scale(0.85) translateX(0);
    }
}

@keyframes moveToP3Left {
    from {
        transform: scale(0.85) translateX(100%);
    }
    to {
        transform: scale(1) translateX(0);
    }
}

@keyframes moveToP2Left {
    from {
        transform: scale(1) translateX(100%);
    }
    to {
        transform: scale(0.85) translateX(0);
    }
}

@keyframes moveToP1Left {
    from {
        transform: scale(0.85) translateX(100%);
    }
    to {
        transform: scale(0.75) translateX(0);
    }
}


@keyframes moveToP1Right {
    from {
        transform: scale(0.75) translateX(-100%);
    }
    to {
        transform: scale(0.75) translateX(0);
    }
}

@keyframes moveToP2Right {
    from {
        transform: scale(0.75) translateX(-100%);
    }
    to {
        transform: scale(0.85) translateX(0);
    }
}

@keyframes moveToP3Right {
    from {
        transform: scale(0.85) translateX(-100%);
    }
    to {
        transform: scale(1) translateX(0);
    }
}

@keyframes moveToP4Right {
    from {
        transform: scale(1) translateX(-100%);
    }
    to {
        transform: scale(0.85) translateX(0);
    }
}

@keyframes moveToP5Right {
    from {
        transform: scale(0.85) translateX(-100%);
    }
    to {
        transform: scale(0.75) translateX(0);
    }
}