How can this BootstrapVue table override the app css?

Question

I have a simple BootstrapVue table.

The css is defined in App.vue. Here's the code for App.vue.

<template>
  <div id="app">
    <!-- <img alt="Vue logo" src="./assets/logo.png"> -->
    <TestTable msg="testing"/>
  </div>
</template>

<script>
import TestTable from './components/TestTable.vue'

export default {
  name: 'App',
  components: {
    TestTable
  }
}
</script>

<style>
#app {
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;  
}
</style>

Here's the code for TestTable.vue.

<template>
  <div>
    <b-table striped hover :items="items"></b-table>
  </div>
</template>

<script>
  export default {
    data() {
      return {
        items: [
          { age: 40, first_name: 'Dickerson', last_name: 'Macdonald' },
          { age: 21, first_name: 'Larsen', last_name: 'Shaw' },
          { age: 89, first_name: 'Geneva', last_name: 'Wilson' },
          { age: 38, first_name: 'Jami', last_name: 'Carney' }
        ]
      }
    }
  }
</script>

The margin-top: 60px is defined in App.vue. I want to modify TableTest.vue such that it overrides the margin top in the CSS in App.vue. I want margin-top: 0px for TableTest.vue.

I am using Vue v2.6 and Bootstrap-vue.

You applied margin from top on parent div. Hence, as child div is separate it will not work. You can apply margin in negative but that is not a good practice to do that. — Rohìt Jíndal
– Rohìt Jíndal, Commented Mar 13, 2022 at 15:18

halfer · Accepted Answer · 2022-03-25 22:06:16Z

2

+50

I want to modify TableTest.vue such that it overrides the margin top in the CSS in App.vue

I earlier commented on your question that you applied margin-top: 60px in your parent component and child component is having its own box model.

Adding a code snippet to show how your component structured:

Vue.component('item', {
  template:'#list-template',
  props:['item'],
});

var vm = new Vue({
  el:"#app",
  computed: {
    limitedItems() {
      return ['item1'];
    }
  }
});

#app {
  border: 2px solid black;
  margin-top: 60px;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.17/vue.js"></script>
<div id="app">
    <item v-for="item in limitedItems" :item="item" style="border: 2px solid green"></item>
</div>

<template id="list-template">
  <p>{{ item }}</p>
</template>

edited Mar 25, 2022 at 22:06

halfer

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answered Mar 16, 2022 at 9:21

Rohìt Jíndal

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2 Comments

user3848207 Over a year ago

Thanks for your answer. Upvoted. I was hoping to have some magical keyword that can allow a child single-file-component(SFC) style to ignore the parent's style. The parent SFC's style may not be desired by some children SFC.

Karolis Stakėnas Over a year ago

Why can't You just use #app { margin-top: 0 } in your Table component?

selcuk · Accepted Answer · 2022-03-13 14:55:11Z

0

you can try margin-top: -60px;

answered Mar 13, 2022 at 14:55

selcuk

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Comments

Karolis Stakėnas · Accepted Answer · 2022-03-16 11:10:05Z

0

Simply use

<style>
 #app {
   margin-top: 0;
 }
</style>

In Your TestTable.vue file and it will overwrite the previous css rule given that both <style> tags are not scoped.

answered Mar 16, 2022 at 11:10

Karolis Stakėnas

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