Is there a way to change thickness of v-divider?

Question

I don't know if I am using the thickness prop correctly or if there is a better way to do this.

<v-divider :thickness="var"/>

Answer 1

Yes there is, the docs state:

Prop Name: thickness
Type: any
Default: undefined
Description: Sets the dividers thickness. Default unit is px.

<v-divider thickness="20px" />

Or, since you are using v-bind, your dynamic prop 'var' should be renamed to let's say 'thicknessVal' and declared like this in the script part: thickness: '20px'.

See https://next.vuetifyjs.com/en/api/v-divider/#props-thickness and https://next.vuetifyjs.com/en/components/dividers/#props.
The latter source even has an example that you can open directly in codepen where you can test it.