NavigationBar.vue

<template>
  <span>
    <v-btn icon to="/">
      <v-icon>mdi-calculator</v-icon>
    </v-btn>
    <v-btn icon to="/currency">
      <v-icon>mdi-currency-usd</v-icon>
    </v-btn>
    <v-btn icon to="/sobre">
      <v-icon>mdi-information-variant</v-icon>
    </v-btn>
  </span>
</template>