src/Builder/Column.php
public function getSize($device)
    {
        if (isset($this->sizes[$device])) {
            return $this->sizes[$device];
        }

        return null;
    }
public function getSize($device)
    {
        if (isset($this->sizes[$device])) {
            return $this->sizes[$device];
        }

        return null;
    }
Get a size for a device.

@param string $device The device.

@return null|array