How to get the height of an element in the element itself via :style?

Question

Vue.js

I have an element:

<div class="info" @click="actuallyPicker === item ?  actuallyPicker = null : actuallyPicker = item" :style="{ height: actuallyPicker === item ? $el.offsetHeight : '' }" v-for="(item, index) in designerButtons" :key="index">

When actuallyPicker becomes the desired object, then the .info element should apply itself to the height of the content within it.
In the code above, I tried to do it through $el.offsetHeight, but this option turned out to be inoperative.

How to do this?