Animate only on enter

.animEnter:hover {
    transition: background-color 1s;
}

.animEnter:hover {
    background-color: #67cdfe;
}

Animate for both events

.animBoth {
    transition: background-color 1s;
}

.animBoth:hover {
    background-color: #67cdfe;
}

Animate only on exit

.animExit:not(:hover) {
    transition: background-color 1s;
}

.animExit:hover {
    background-color: #67cdfe;
}