setting Jinja to use variable_start_string, variable_end_string

I have the following settings for Jinja in my flask project (since I am using Vue.js {{}} is already in use)

jinja_options = Flask.jinja_options.copy()
jinja_options['variable_start_string'] = '[['
jinja_options['variable_end_string'] = ']]'

Now the problem is that my css templates are showing errors because  it does not recognizes the brackets for example

<style>
.widget_container_[[prefix]] {
  display: flex;
  max-height: 40px;
}

Is there a way to configure my IDE from {{}} to [[]]