Setting the width of the cf6 component

How to set the width of the component and the right module 50:50?
I want to insert a description of the action in the right module, but it is inappropriately narrow (this is definitely determined by the template)
The form is here: https://skutrklub.cz/index.php/ostrozska-nova-ves-test-nepouzivat
Thanks

Hi stadions11,
​
You can set the form width using Custom CSS - for example:
​
form#load-form {
width: 20%;
}
​
Bob

Thank you for the quick reply.
Yes, I set the width like this inside id=maininner. But I need to change the maininner width and only for the cf6 component. And similarly change the width of the right module.
I'll probably have to deal with that at the template level, right?

Hi stadions11,
​
I think that the form Custom CSS will be applied to other elements in the page if you use appropriate selectors.
​
Bob