@require 'components/forms.styl'
@require 'settings/palette.styl'

.fil-file-name-input
    @extend $form-text

    input[type=text]
        width   100%
        padding .375rem

        &:focus
            background-color  var(--white)

@require 'components/forms.styl'
@require 'settings/palette.styl'

.fil-file-name-input
    @extend $form-text
    display table-cell
    width 100%

    input[type=text]
        width   100%
        padding .375rem

        &:focus
            background-color  var(--white)

Make the input takes 100% of the width
Fix: Make the input takes 100% of the width
