Resolved: the width of ngx-select-dropdown its not working using table

<td>
    <ngx-select-dropdown 
        class="ngx-select-dropdown"
        [config]="employeConfig"
        [options]="responseDS"
        name="officeDesc">
    </ngx-select-dropdown>
</td>

ngx-select-dropdown, .ngx-dropdown-button {
    max-width: 220px;
}
                }

this.employeConfig = {
    displayKey: 'officeDesc',
    placeholder: '',
    limitTo: this._Obj.length,
    moreText: 'officeDesc',
    noResultsFound: 'No results found',
    searchPlaceholder: 'Search',
}

.dropdown {
  min-width: 200px;
  max-width: 300px;
}