app_vue2/components/Form/ExpansionPanelComponent.vue

<template>
     <v-expansion-panel>
       <v-expansion-panel-header class="ot_light_grey">
         <v-icon class="ot_white--text ot_green icon">{{icon}}</v-icon>
         {{title}}
       </v-expansion-panel-header>
       <v-expansion-panel-content>
        <slot></slot>
       </v-expansion-panel-content>
     </v-expansion-panel>
 </template>

<script lang="ts">
    export default {
      props: {
        title:{
          type: String,
          required: true
        },
        icon:{
          type: String,
          required: false
        }
      },

      setup(){
      }
    }
</script>

<style scoped>
  .icon{
    width: 30px;
    height: 30px;
    padding: 10px;
    flex: none;
  }
</style>