Follow below steps for view your changes

Delete var folder

Delete pub/static/

Run bellow commands for generate static content and clean cache.

php bin/magento setup:static-content:deploy

php bin/magento cache:clean

Now check your changes.

Follow below steps for view your changes

Delete var folder

Delete pub/static/

Run bellow commands for generate static content and clean cache.

php bin/magento setup:static-content:deploy

php bin/magento cache:clean

deleting browser cache

Now check your changes.

You have to deploy static content for view your changes.

Run bellow commands for generate static content and clean cache.

php bin/magento setup:static-content:deploy

php bin/magento cache:clean

and also delete var folder

Now check your changes.

Follow below steps for view your changes

Delete var folder

Delete pub/static/

Run bellow commands for generate static content and clean cache.

php bin/magento setup:static-content:deploy

php bin/magento cache:clean

Now check your changes.