gradient_server-1.0.x-dev/themes/gradient_base/gradient_base.libraries.yml

global-styling:
  js:
    js/global.js: {}
  css:
    component:
      css/style.css: {}
      css/colors.css: {}
bootstrap:
  js:
    /libraries/bootstrap/js/bootstrap.min.js: {}
  css:
    component:
      /libraries/bootstrap/css/bootstrap.min.css: {}