view(Front): seek date on purchase form.

tienda_ilusion/don_confiao/frontend/don-confiao/src/components/Purchase.vue

@@ -11,7 +11,7 @@
     <v-app-bar app>
       <v-toolbar-title>Compra</v-toolbar-title>
     </v-app-bar>
-
+    <v-main>
     <v-container>
       <v-form ref="form" v-model="valid">
         <v-text-field
@@ -86,6 +86,7 @@
         <v-btn @click="submit" color="green">Comprar</v-btn>
       </v-form>
     </v-container>
+    </v-main>
   </v-app>
 </template>