The layout usage of laravel-admin can be found in the index() method of the home page's layout file HomeController.php.
The Encore\Admin\Layout\Content class is used to implement the layout of the content area. The Content::row ($element) method is used to add a row element:
// Add text
$content->row('One line of text');
// Add a component
$content->row(new Box('title', 'xxxx'));
The Encore\Admin\Layout\Row class is used for layout of inline elements. The Row::column($width, $element) method is used to add columns in a row:
// Add columns in the row
$content->row(function(Row $row) {
$row->column(4, 'xxx');
$row->column(4, 'xxx');
$row->column(4, 'xxx');
});The $width parameter is used to set the width of the column elements, based on the bootstrap layout definition of the grid system. The $element parameter can be any object that implements the Illuminate\Contracts\Support\Renderable interface or any other printable variable.