form-width = 600px

#partner-application-page
  padding 20px 0

.partner-application-header
  text-align center
  max-width form-width
  margin 0 auto
  padding 0 5%
  > h1
    font-size 30px
    margin 10px 0 20px 0
    line-height 1.1

.pah-step
  color gray-darker-color

.partner-application-form
  max-width form-width
  margin 20px auto
  .stacked-form-cell
    margin 20px 0

.paf-checkbox-set
  margin 20px 10%

.pah-success
  max-width (form-width / 1.5)
  margin 20px auto
  text-align center
  > p
    text-align left
    block-margins(10px)

.pah-success-message
  color green-color
  > .icon-check
    font-size 0.75em
    margin-right 0.25em
    line-height 1

form-width = 600px

#partner-application-page
  padding 20px 0
  font-size 17px

.partner-application-header
  text-align center
  max-width form-width
  margin 0 auto
  padding 0 5%
  > h1
    font-size 30px
    margin 10px 0 20px 0
    line-height 1.1

.pah-step
  color gray-darker-color

.partner-application-form
  max-width form-width
  margin 20px auto
  .stacked-form-cell
    margin 20px 0

.paf-checkbox-set
  margin 20px 10%

.pah-success
  max-width (form-width / 1.5)
  margin 20px auto
  text-align center
  > p
    text-align left
    block-margins(10px)

.pah-success-message
  color green-color
  > .icon-check
    font-size 0.75em
    margin-right 0.25em
    line-height 1

Change base font-size to 17px
Change base font-size to 17px
