only one class work in vue code example
Example 1: vue conditional class
<div :class="{ 'prop-name': boolVar }"></div>
Example 2: vue class binding
<div v-bind:class="{ active: isActive }"></div>
<div :class="{ 'prop-name': boolVar }"></div>
<div v-bind:class="{ active: isActive }"></div>