How to specify different margin for different screen sizes using breakpoint in Vuetify

问题

Question:

I have a loop displaying specified amount of cards.

The problem is with ma-5 attribute in <v-flex>. On xs screen size this margin is too big. Ho do I specify a different margin for different screen sizes?

Code:

   <v-container>
      <v-layout row wrap>
        <v-flex xs12 sm6 md4 ma-5 v-for="card in filteredCards" :key="card.id">
          <v-card flat class="elevation-20 test">
            <v-card-media :src="card.image" height="200px">
            </v-card-media>
            <v-card-title primary-title class="pa-4">
               <div>
                  <h3 class="headline mb-0">{{card.title}}</h3>
                  <div style="min-height:50px;">{{card.description}}</div>
               </div>
            </v-card-title>
          </v-card>
        </v-flex>
      </v-layout>
   </v-container>

Tried:

I tried adding this code below (copied from this page)

<v-flex xs12 sm6 md4 v-for="card in filteredCards" :key="card.id"
   :class="{'ma-0': $breakpoint.smAndDown, 'ma-5': $breakpoint.mdAndUp}">

and I get these errors:

[Vue warn]: Property or method "$breakpoint" is not defined on the instance but referenced during render
[Vue warn]: Error in render: "TypeError: Cannot read property 'smAndDown' of undefined"
TypeError: Cannot read property 'smAndDown' of undefined

回答1:

$vuetify.breakpoint.smAndDown

Notice $vuetify

In your case:

<v-flex 
    v-for="card in filteredCards"
    :key="card.id"
    :class="{'ma-0': $vuetify.breakpoint.smAndDown, 'ma-5': $vuetify.breakpoint.mdAndUp}"
    xs12 sm6 md4  
>

Check docs (Breakpoint object)

回答2:

The helper classes apply margin or padding at a given breakpoint. These classes can be applied using the following format: {property}{direction}-{breakpoint}-{size}.

来源：https://stackoverflow.com/questions/48137224/how-to-specify-different-margin-for-different-screen-sizes-using-breakpoint-in-v

标签

vuetify.js