Newsletter block formatting fields and button

Site URL: https://reductionroadmap.dk/

Hi Forum,

I am asking, like so many before me, for help concerning the newsletter block. 
I would like for the fields and the button to be wider and more narrow - which I tried to illustrate in my extremely poor drawing attached. I've tried different ways around it, in CSS, but never succeeded in what I wanted, which is why I am turning to you.

Any help is much appreciated!

The page:

https://reductionroadmap.dk/

password:

Reduce2Survive

Add to Design > Custom CSS

.newsletter-block .newsletter-form-fields-wrapper {
    width: 100% !important;
}
.newsletter-block .newsletter-form-fields-wrapper>* {
    max-width: 100% !important;
}
.newsletter-form-field-wrapper.field {
    max-width: 100% !important;
}
button.newsletter-form-button.sqs-system-button.sqs-editable-button-layout.sqs-editable-button-style.sqs-editable-button-shape.sqs-button-element--primary {
    width: 100%;
}