Laravel Excel Style with CSS not working while exporting view

I am trying to export view using laravel Excel 3.1. While the export is working, I am not being able to style it.

My laravel Export looks as:

<?php

namespace App\Exports;

use Illuminate\Contracts\View\View;
use Maatwebsite\Excel\Concerns\FromView;

use Maatwebsite\Excel\Concerns\WithEvents;
use Maatwebsite\Excel\Concerns\RegistersEventListeners;
use Maatwebsite\Excel\Events\AfterSheet;

class MatrixExcelExport implements FromView, WithEvents
{
    use RegistersEventListeners;
    protected $data, $selected_data, $am_lists_only, $categories_list, $amenities_list, $affordable_list, $unit_type_list, $highlights_list, $non_unit;
    public function __construct($data, $selected_data, $am_lists_only, $categories_list, $amenities_list, $affordable_list, $unit_type_list, $highlights_list, $non_unit)
    {
        $this->data = $data;
        $this->selected_data = $selected_data;
        $this->am_lists_only = $am_lists_only;
        $this->categories_list = $categories_list;
        $this->amenities_list = $amenities_list;
        $this->affordable_list = $affordable_list;
        $this->unit_type_list = $unit_type_list;
        $this->highlights_list = $highlights_list;
        $this->non_unit = $non_unit;
    }

    public function view(): View
    {
        return view('admin.matrix._excel', [
            'data' => $this->data,
            'selected_data' => $this->selected_data,
            'am_lists_only' => $this->am_lists_only,
            'categories' => $this->categories_list,
            'amenities' => $this->amenities_list,
            'affordables' => $this->affordable_list,
            'unit_types' => $this->unit_type_list,
            'highlights' => $this->highlights_list,
            'non_unit' => $this->non_unit
        ]);
    }
}

And my _excel looks like this:

<?php
$impact = 0;
$negativeChanges = 0;
$positiveChanges = 0;
?>
<style>
    .strikethroughCell{
        text-decoration: line-through !important;
    }
    .table-text-center th,
    .table-text-center td{
        text-align: center !important;
    }
</style>
<table class="table-text-center">
    <thead>
        <tr>
            <th rowspan="2">Bldg</th>
            <th rowspan="2">Unit</th>
            <th rowspan="2">Floor</th>
            <th rowspan="2">Stack</th>
            @foreach($selected_data as $k => $v)
                <th colspan="{{count($v['amenities'])}}">
                    {{$v['category_name']}}
                </th>
            @endforeach
        </tr>
        <tr>
            @foreach($am_lists_only as $ak => $av)
                <th title="{{ $av }}">
                    <?php
                        if (strlen($av) > 15){
                            $av = substr($av, 0, 12) . '...';
                        }
                    ?>
                    {{ $av }}
                </th>
            @endforeach
        </tr>
    </thead>
    <tbody>
    @foreach($data as $k => $v)
        <?php
        if(count($v) == 0){
            continue;
        }
        $unit_cell_status  = '';
        $unit_note_class = '';
        $avail_status = '';

        if(trim($v[0]->unit_note) != ''){
            $unit_note_class = 'unit_note';
        }
        if(isset($v[0]->avail_status)){
            $avail_status = str_replace(' ','-',strtolower($v[0]->avail_status));
            if(!in_array($avail_status,$highlights)){
                $avail_status = '';
            }
        }
        $unit_type_id = NULL;
        if(!empty($v[0]->unit_type_id)){
            $unit_type_id = $v[0]->unit_type_id;
        }
        $unit_type_class = (in_array($unit_type_id, $unit_types))?"td-unit-type":"";

        ?>
        <tr id="ur_{{$v[0]->unit_id}}">
            <td data-search="{{ $v[0]->building_number }}">{{ $v[0]->building_number }}</td>
            <td data-search="{{ $v[0]->unit_id }}" data-unitid="{{$v[0]->unit_id}}" id="unitCell_{{$v[0]->unit_id}}" class="td-unit {{ $unit_note_class }} {{ $avail_status }} {{ $unit_type_class }}" xonclick="editUnit(1, {{ $v[0]->unit_id }}, {{ $v[0]->building_id }}); return false;">{{ $v[0]->unit_number }}</td>
            <td data-search="{{ $v[0]->floor }}">{{ $v[0]->floor }}</td>
            <td data-search="{{ $v[0]->stack }}">{{ $v[0]->stack }}</td>
            @foreach($am_lists_only as $ak => $av)
                <?php
                $amenity_val = "";
                $deleted_class = "";
                $negativeClass = "";
                $affordable = false;
                $text_class = '';
                $strikethrough_class = '';
                foreach($v as $vk => $vv){
                    if($ak == $vv->amenity_id){
                        if( (isset($categories[0]) && $categories[0] === "-1") || !empty(in_array($vv->category_id, $categories)) || !empty(in_array($vv->amenity_id, $amenities))) {
                            if(empty($vv->uav_deleted_at)){
                                $impact += $vv->amenity_value;
                                if($vv->av_status == 2){
                                    $text_class = 'text-updated';
                                    if($unit_cell_status == ''){
                                        $unit_cell_status = $text_class;
                                    }

                                    if($vv->initial_amenity_value != $vv->amenity_value){
                                        $diff = $vv->amenity_value - $vv->initial_amenity_value  ;
                                        if($diff > 0){
                                            $positiveChanges += $diff;
                                        }else{
                                            $negativeChanges += abs($diff);
                                        }
                                    }
                                }

                                if($vv->uav_status == 1){
                                    $text_class = 'text-added';
                                    $unit_cell_status = $text_class;
                                    if($vv->amenity_value != 0){
                                        if($vv->amenity_value > 0){
                                            $positiveChanges += abs($vv->amenity_value);
                                        }else{
                                            $negativeChanges += abs($vv->amenity_value);
                                        }
                                    }
                                }

                            }else{
                                $deleted_class = "td-deleted";
                                if($vv->amenity_value != 0){
                                    if($vv->amenity_value > 0){
                                        $negativeChanges += abs($vv->amenity_value);
                                    }else{
                                        $positiveChanges += abs($vv->amenity_value);
                                    }
                                }
                                $strikethrough_class = 'strikethroughCell';
                            }
                            $show_sum = true;
                            if($affordable == false && in_array($vv->amenity_id, $affordables) && empty($vv->uav_deleted_at)){
                                $affordable = true;
                            }
                            $amenity_val = $vv->amenity_value;
                            if($amenity_val < 0){
                                $amenity_val = "(".abs($amenity_val).")";
                                $negativeClass = 'text-negative';
                            }
                            if($deleted_class != ""){
                                $amenity_val = "<del>".$amenity_val."</del>";
                            }
                        }else{
                            if(empty($vv->uav_deleted_at)){
                                if($vv->av_status == 2){
                                    if($vv->initial_amenity_value != $vv->amenity_value){
                                        $diff = $vv->amenity_value - $vv->initial_amenity_value  ;
                                        if($diff > 0){
                                            $positiveChanges += $diff;
                                        }else{
                                            $negativeChanges += abs($diff);
                                        }
                                    }
                                }
                                if($vv->uav_status == 1){
                                    if($vv->amenity_value != 0){
                                        if($vv->amenity_value > 0){
                                            $positiveChanges += abs($vv->amenity_value);
                                        }else{
                                            $negativeChanges += abs($vv->amenity_value);
                                        }
                                    }
                                }
                            }else{
                                if($vv->amenity_value != 0){
                                    if($vv->amenity_value > 0){
                                        $negativeChanges += abs($vv->amenity_value);
                                    }else{
                                        $positiveChanges += abs($vv->amenity_value);
                                    }
                                }
                            }
                        }
                    }
                }
//                $str = ['<del>','</del>'];
//                $rplc =['-','-'];
//                $search_val = str_replace($str,$rplc,$amenity_val);

                ?>
                <td data-am_id="{{$ak}}" class="{{$strikethrough_class}} {{($affordable == true)?'affordable-unit':''}} {{$deleted_class}} {{$negativeClass}} {{ $text_class }}">
                    {!! $amenity_val !!}
                </td>
            @endforeach
        </tr>
    @endforeach
    </tbody>
</table>

Well, I want to center the text of all cells and want to add strikethrough to the text of those td with class strikethroughCell