How to modify the scroll bar style in Vue

<ul class="nav-tabs-scroll">
  <li v-for="(item,index) in tabs" :key="index" class="nav-item-scroll">{
<!-- -->{item.text}}</li>
</ul>
<v-textarea outlined v-model="text" style="width: 200px; margin: 16px;" class="text"></v-textarea>

data: () => ({
      tabs: [
        { value: 4001, text: 'Loan Log', code: 'LOAN_LOG' },
        { value: 4002, text: 'Document Log', code: 'DOCUMENT_LOG' },
        { value: 4003, text: 'Note Log', code: 'NOTE_LOG' },
        { value: 4004, text: 'Operation Log', code: 'OPERATION_LOG' },
        { value: 4005, text: 'Payment Log', code: 'PAYMENT_LOG' },
        { value: 4006, text: 'Maintenance Log', code: 'MAINTENANCE_LOG' },
        { value: 4007, text: 'Transaction Log', code: 'TRANSACTION_LOG' },
        { value: 4008, text: 'Collection Log', code: 'COLLECTION_LOG' },
        { value: 4001, text: 'Loan Log', code: 'LOAN_LOG' },
        { value: 4002, text: 'Document Log', code: 'DOCUMENT_LOG' },
        { value: 4003, text: 'Note Log', code: 'NOTE_LOG' },
        { value: 4004, text: 'Operation Log', code: 'OPERATION_LOG' },
        { value: 4005, text: 'Payment Log', code: 'PAYMENT_LOG' },
        { value: 4006, text: 'Maintenance Log', code: 'MAINTENANCE_LOG' },
        { value: 4007, text: 'Transaction Log', code: 'TRANSACTION_LOG' },
        { value: 4008, text: 'Collection Log', code: 'COLLECTION_LOG' },
        { value: 4001, text: 'Loan Log', code: 'LOAN_LOG' },
        { value: 4002, text: 'Document Log', code: 'DOCUMENT_LOG' },
        { value: 4003, text: 'Note Log', code: 'NOTE_LOG' },
        { value: 4004, text: 'Operation Log', code: 'OPERATION_LOG' },
        { value: 4005, text: 'Payment Log', code: 'PAYMENT_LOG' },
        { value: 4006, text: 'Maintenance Log', code: 'MAINTENANCE_LOG' },
        { value: 4007, text: 'Transaction Log', code: 'TRANSACTION_LOG' },
        { value: 4008, text: 'Collection Log', code: 'COLLECTION_LOG' }
      ],
      text: ''
    }),

<style lang="scss" scoped>
  .nav-tabs-scroll {
    height: 100px;
    list-style: none;
    margin: 0px;
    padding: 16px 0;
    overflow-x: auto;
    display: inline-block;
    white-space: nowrap;
    width: 100%; 
    background: #F9FAFD;
  }
  .nav-item-scroll {
    background: #E5F0FF;
    color: #24252E;
    font-size: 12px;
    font-weight: 400;
    line-height: 16px;
    padding: 8px 8px 180px;
    text-align: center;
    display: inline;
    margin: 0 4px 0;
    border-radius: 16px;
  }
  .nav-tabs-scroll::-webkit-scrollbar {
    width: 20px;
    height: 10px;
  }
  .nav-tabs-scroll::-webkit-scrollbar-thumb {
    border-radius: 5px;
    background: red;
  }
  .nav-tabs-scroll::-webkit-scrollbar-button {
    width: 10px;
    border-radius: 50%;
    background: black;
  }
  .nav-tabs-scroll::-webkit-scrollbar-track {
    box-shadow: inset 0 0 2px #333;
    border-radius: 5px;
    background: blue;
  }
  .nav-tabs-scroll::-webkit-scrollbar-corner {
    background: springgreen;
  }
  /*
  .nav-tabs-scroll::-webkit-scrollbar-track-piece {
    box-shadow: inset 0 0 2px #333;
    border-radius: 5px;
    background: plum;
  }
  */
</style>
<style>
  .text.v-textarea textarea::-webkit-resizer {
    background: pink;
  }
</style>