How to disable vuetify button activity?

Question

Vue.js

When you click on the button, a border appears on the button.
How to regulate this allocation?
That is, turn it on and off manually

Panel code:

<v-bottom-navigation fixed height="50">
                    <v-btn v-on:click="SetActivePanel('Main')">
                        <span>Лента</span>
                        <v-icon>mdi-image</v-icon>
                    </v-btn>

                    <v-btn v-on:click="SetActivePanel('UserProfile')">
                        <span>Аккаунт</span>
                        <v-icon>mdi-account</v-icon>
                    </v-btn>

                    <v-btn v-on:click="SetActivePanel('UserSettings')">
                        <span>Настройки</span>
                        <v-icon>fa-cog</v-icon>
                    </v-btn>
                </v-bottom-navigation>