View file vendor/laravel/framework/src/Illuminate/Mail/resources/views/html/header.blade.php
@props(['url']) <tr> <td class="header"> <a href="{{ $url }}" style="display: inline-block;"> @if (trim($slot) === 'Laravel') <img src="https://laravel.com/img/notification-logo.png" class="logo" alt="Laravel Logo"> @else {{ $slot }} @endif </a> </td> </tr>