我在yii2的布局中有此弹出部分。它会在必要时自然向下滚动，但不会水平滚动。我怎样才能使其水平滚动？
<?php
/* @var $this \yii\web\View */
/* @var $content string */
use app\widgets\Alert;
use yii\helpers\Html;
use yii\bootstrap\Nav;
use yii\bootstrap\NavBar;
use yii\widgets\Breadcrumbs;
use app\assets\AppAsset;
AppAsset::register($this);
?>
<?php $this->beginPage() ?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title><?= Html::encode($this->title) ?></title>
<!-- Tell the browser to be responsive to screen width -->
<meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
<link rel="icon" href="images/favicon.ico" type="image/x-icon" />
<?php $this->head() ?>
</head>
<body>
<?php $this->beginBody() ?>
<!-- Create modal -->
<!-- <div class="modal-body"> -->
<?= $content ?>
<!-- </div> -->
<?php $this->endBody() ?>
</body>
</html>
<?php $this->endPage() ?>
此弹出窗口包含在Web /主题/默认/视图/布局中
我的工作正常，请在模态div之后使用overflow-y：scroll;
<?php
/* @var $this \yii\web\View */
/* @var $content string */
use app\widgets\Alert;
use yii\helpers\Html;
use yii\bootstrap\Nav;
use yii\bootstrap\NavBar;
use yii\widgets\Breadcrumbs;
use app\assets\AppAsset;
AppAsset::register($this);
?>
<?php $this->beginPage() ?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title><?= Html::encode($this->title) ?></title>
<!-- Tell the browser to be responsive to screen width -->
<meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
<link rel="icon" href="images/favicon.ico" type="image/x-icon" />
<?php $this->head() ?>
</head>
<body>
<?php $this->beginBody() ?>
<!-- Create modal -->
<!-- <div class="modal-body"> -->
<div style ="overflow-y: scroll;">
<?= $content ?>
</div>
<!-- </div> -->
<?php $this->endBody() ?>
</body>
</html>
<?php $this->endPage() ?>