theming – Classification: {{content.field_classification.value}} do not show

Hope that someone can help me please.

I'm trying to display the value of a custom field in a seed subtopic

I created my node - testtype.html.twig model and that seems to work.

I'm just trying to show the contents of a field, the name of the machine is field_classification.

When I use

Classification: {{content.field_classification.value}}

the classification is displayed as expected, but not the value of my field_classification.

Can anyone see what I'm doing wrong as I thought I had copied the correct code from what I had read?