CSS

how to add css in flask app

<link rel= "stylesheet" type= "text/css" href= "{{ url_for('static',filename='styles/mainpage.css') }}">

how to add a stylesheet to flask app

<link rel="stylesheet" type='text/css" href="{{ url_for('static', filename='main.css') }}">
Make sure that the css is in the 'static' file you should have created
inside the root directory of the project.

linking custom CSS in flask

{% block styles %}
{{super()}}
<link rel="stylesheet"
      href="{{url_for('.static', filename='mystyle.css')}}">
{% endblock %}

how to link css to html flask

#link it in html

<link rel= "stylesheet" type= "text/css" href= "{{url_for('static', filename='styles/styles.css') }}">

#place a config for your app so that browser doesn't store cashe, if this doesn't update your css clear browser cash for last {x} hours
if __name__ == '__main__':
    app.config['SEND_FILE_MAX_AGE_DEFAULT'] = 1
    app.run()

#make sure that your directory looks something like this...
|root|
MainFileWithFlaskProgram.py

	|static|
		|styles|
			styles.css

	|templates|
		YourHTMLFile.html

how to render css in flask

/app
    - app_runner.py
    /services
        - app.py 
    /templates
        - mainpage.html
    /static
        /styles
            - mainpage.css