Vue- How to change style of a same element in different components - html

Question

I am trying to change the style of a specific div from one component to another. Each component is appended to the template in the App component and replaces the <router-view></router-view> tags. The div #app needs to have a padding of 172px in the Hello.vue component, and 0px on the rest of the components.Is this possible, and how can I accomplish this?
App.vue
<template>
<div id="app">
<div>
<img src="./assets/logo.png" align="center">
</div>
<router-view></router-view>
</div>
</template>
<script>
export default {
name: 'app'
}
</script>
<style>
#app {
font-family: 'Avenir', Helvetica, Arial, sans-serif;
background-color: hsla(275, 97%, 50%, 0.57);
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
text-align: center;
color: #2c3e50;
margin-top: 0px;
height: inherit;
}
body{
height: inherit;
}
html{
height: 100%;
}
</style>
Hello.vue
<template>
<div class="hello">
<h1>{{ msg }}</h1>
<ul>
<li><h2><router-link to="/app/login">Login</router-link></h2></li>
<li><h2><router-link to="/app/about">About Us</router-link></h2></li>
</ul>
</div>
</template>
<script>
export default {
name: 'hello',
data () {
return {
msg: 'Welcome to Vue'
}
}
}
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
#app{
padding-top: 172px; /*This does not work*/
}
h1, h2 {
font-weight: normal;
}
ul {
list-style-type: none;
padding: 0;
}
li {
display: inline-block;
margin: 0 10px;
}
a {
color: #000000;
}
</style>

Answer 1

There is a quick way to do this (not sure if it's best practice) by checking the route path; assume Hello.vue is rendered via the path /hello:
<div id="app" :style="{ padding: $route.path === '/hello' ? '172px' : '0px' }">
...
</div>