MINI

C:/xampp/htdocs/vote/vendor/phpoffice/phpspreadsheet/samples/bootstrap/css/

files >> C:/xampp/htdocs/vote/vendor/phpoffice/phpspreadsheet/samples/bootstrap/css/phpspreadsheet.css

 body {
    padding-top: 20px;
    padding-bottom: 20px;
}
.navbar {
    margin-bottom: 20px;
}
.passed {
    color: #339900;
}
.failed {
    color: #ff0000;
}