How to use Vue JS transition "inside" another transition? - vue.js

Question

Say I have a normal transition, which works perfectly fine (following vue docs). But I would like to have another transition INSIDE that one.
So for example, an element slides in, but then the text within that fades in at the same time?
I can't get the inside child transition to animate. It's not getting fired? I've tried "appear" also thinking the node is new.
There's almost no information out there on this.
<div id="demo">
<transition name="slide">
<div v-if="show">
<transition name="slide-fade">
<p>hello</p>
</transition>
</div>
</transition>
</div>
Transition effects
.fade-enter-active,
.fade-leave-active {
transition: opacity 0.5s;
}
.fade-enter,
.fade-leave-to {
opacity: 0;
}
.slide-fade-enter-active {
transition: all 0.3s ease;
}
.slide-fade-leave-active {
transition: all 0.8s cubic-bezier(1, 0.5, 0.8, 1);
}
.slide-fade-enter,
.slide-fade-leave-to {
transform: translateX(10px);
opacity: 0;
}

Answer 1

You did not seem to add the transition CSS for the slide component. The following should work:
const vm = new Vue({
el: '#demo',
data() {
return {
show: true
}
}
})
.slide-fade-enter-active,
.slide-fade-leave-active {
transition: opacity 0.5s;
}
.slide-fade-enter,
.slide-fade-leave-to {
opacity: 0;
}
.slide-enter-active {
transition: all 0.3s ease;
}
.slide-leave-active {
transition: all 0.8s cubic-bezier(1, 0.5, 0.8, 1);
}
.slide-enter,
.slide-leave-to {
transform: translateX(10px);
opacity: 0;
}
/* Some styling to make them noticeable */
.parent {
background-color: lightgray;
padding: 2px;
}
.child {
background-color: yellow;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="demo">
<transition name="slide">
<div v-if="show" class="parent">
<transition name="slide-fade">
<p class="child">hello</p>
</transition>
</div>
</transition>
<button #click="show = !show">Toggle</button>
</div>