.cpt {
    display: inline-block;
}
.cpt .hidden, .cpt .hidden + .hidden2 {
    display: none;
}
.cpt .hidden2 {
    display: inline;
}
.cpt > span {
    transition: color 0.4s ease-in-out;
    display: inline-block;
}
.cpt > span > span {
    display: inline-block;
    width: 0.7em;
    height: 1em;
    line-height: 1em;
    text-align: center;
}
.cpt > span > span:first-of-type {
    text-align: right;
}
.cpt > span > span:last-of-type {
    text-align: left;
}
.cpt.anim .prec {
    position: relative;
    color: transparent;
}
.cpt.anim .prec::before, .cpt.anim .prec::after {
    color: black;
    color: var(--color);
    color: var(--color, black);
    position: absolute;
    left: 0px;
    right: 0px;
}
.cpt.anim .prec::before {
    content: attr(data-prec);
    top: -100%;
    opacity: 0;
    animation: prec-before 0.4s ease-in-out;
}
@keyframes prec-before {
    0% {
        top: 0%;
        opacity: 1;
    }
    100% {
        top: -100%;
        opacity: 0;
    }
}
.cpt.anim .prec::after {
    content: attr(data-act);
    top: 0%;
    opacity: 1;
    animation: prec-after 0.4s ease-in-out;
}
@keyframes prec-after {
    0% {
        top: 100%;
        opacity: 0;
    }
    100% {
        top: 0%;
        opacity: 1;
    }
}