Hi Bingxueyinlian,
Greetings from Syncfusion support,
Currently, we don’t have an version based CSS file in the
theme studio. In theme studio we can download the latest different themes file
only. However, we are maintaining a custom resource generator which is used to
generate the custom packages and CSS file in version. So, you can download your
required version style files along with scripts in the following site. Also,
you can use this style files to any same setup components.
CRG: https://crg.syncfusion.com/
CRG Documentation: https://ej2.syncfusion.com/javascript/documentation/common/custom-resource-generator/
Please get back to us if you have any queries.
Regards,
Gokul