SUITCSS Starter File: Remove portions where desired. A listing of every variable is provided along with it's default value.

index.css

@import "suitcss-base";

@import "suitcss-utils-align";
@import "suitcss-utils-display";
@import "suitcss-utils-layout";
@import "suitcss-utils-link";
@import "suitcss-utils-offset";
@import "suitcss-utils-position";
@import "suitcss-utils-size";
@import "suitcss-utils-text";

@import "suitcss-components-arrange";
@import "suitcss-components-button";
@import "suitcss-components-flex-embed";
@import "suitcss-components-grid";

@custom-media --sm-viewport (min-width: 320px);
@custom-media --md-viewport (min-width: 640px);
@custom-media --lg-viewport (min-width: 960px);

:root {
  --base-color: inherit;
  --base-font: 16px sans-serif;
  --base-link-color: #069;
  --base-link-color-hover: #069;

  --Arrange-gutter-size: 10px;

  --Button-border-width: 1px;
  --Button-border-color: currentcolor;
  --Button-color: inherit;
  --Button-font: inherit;
  --Button-padding: 0.4em 0.75em;
  --Button-disabled-opacity: 0.6;

  --Grid-font-size: 1rem;
  --Grid-gutter-size: 10px;
}