# Skelementor > CSS Utility Importer for Elementor v4 - Import utility classes directly into Elementor's Global Classes and Variables systems. ## Docs - [Border Radius](https://skelementorcss.com/borders/radius.md): Border radius utilities for rounded corners. - [Border Style](https://skelementorcss.com/borders/style.md): The bundled border styles: solid, dashed, and none. - [Border Width](https://skelementorcss.com/borders/width.md): The bundled border-width scale from `border-0` through `border-20`. - [Changelog](https://skelementorcss.com/changelog.md): What’s new in SkelementorCSS. - [Background Colors](https://skelementorcss.com/colors/background-colors.md): Background utilities for white, black, and gray surfaces, plus six semantic tokens with optional l-5…d-5 ramps matching the Colors palette. - [Border Colors](https://skelementorcss.com/colors/border-colors.md): Border-color utilities for structural grays and six semantic tokens—primary, secondary, neutral, success, warning, error—with optional l-5…d-5 ramps. - [Text Colors](https://skelementorcss.com/colors/text-colors.md): Text utilities for structural grays plus six semantic tokens—primary, secondary, neutral, success, warning, error—with optional l-5…d-5 ramps. - [Buttons](https://skelementorcss.com/components/button.md): Bundled button presets: semantic color classes plus separate size classes from button-xs through button-xl. - [Borders](https://skelementorcss.com/concepts/borders.md): Border width, style, radius, and color utilities for defining element boundaries. - [Colors](https://skelementorcss.com/concepts/colors.md): Text, background, and border colors with semantic naming. - [Components](https://skelementorcss.com/concepts/components.md): Bundled preset button classes for fast, consistent actions. - [Effects](https://skelementorcss.com/concepts/effects.md): Opacity and standalone outer/inset shadow presets for tone, depth, and surface hierarchy. - [Filters](https://skelementorcss.com/concepts/filters.md): Bundled filter utilities for blur, brightness, contrast, saturation, and color shifts. - [Fluid scaling](https://skelementorcss.com/concepts/fluid-scaling.md): How the bundled fluid families scale smoothly and where fixed utilities still make more sense. - [Layout](https://skelementorcss.com/concepts/layout.md): Display, overflow, object-fit, aspect-ratio, positioning, and z-index utilities. - [Breakpoints](https://skelementorcss.com/concepts/responsive-utilities.md): The shipped `--on-*` suffix system for structural classes at each breakpoint. - [Sizing](https://skelementorcss.com/concepts/sizing.md): Width, height, and matching min/max sizing helpers for fixed, fractional, and keyword-based layouts. - [Spacing](https://skelementorcss.com/concepts/spacing.md): Margin and padding utilities built around the bundled spacing scale. - [Typography](https://skelementorcss.com/concepts/typography.md): Responsive type scale, leading, weights, alignment, tracking, and text styling. - [Variables](https://skelementorcss.com/concepts/variables.md): How Elementor Variables act as shared design tokens and how they work alongside Skelementor utilities. - [Box Shadow](https://skelementorcss.com/effects/box-shadow.md): Standalone outer and inset shadow presets for elevation, recessed depth, and semantic emphasis. - [Opacity](https://skelementorcss.com/effects/opacity.md): Use the bundled opacity scale for overlays, states, and layered interfaces. - [Blur](https://skelementorcss.com/filters/blur.md): Use the bundled blur utilities to soften media and supporting layers. - [Brightness](https://skelementorcss.com/filters/brightness.md): Use the bundled brightness utilities to dim or lift media without replacing the source asset. - [Color Effects](https://skelementorcss.com/filters/color-effects.md): Use bundled grayscale, invert, sepia, and filter reset utilities for quick tonal treatments. - [Contrast](https://skelementorcss.com/filters/contrast.md): Use the bundled contrast utilities to tighten or soften tonal separation in imagery. - [Hue Rotate](https://skelementorcss.com/filters/hue-rotate.md): Use the bundled hue rotation utilities to shift imagery into a new color family. - [Saturate](https://skelementorcss.com/filters/saturate.md): Use the bundled saturation utilities to reduce or amplify color intensity. - [Align Content](https://skelementorcss.com/flexbox/align-content.md): Use the shipped `content-*` utilities to distribute wrapped flex lines on the cross axis. - [Align Items](https://skelementorcss.com/flexbox/align-items.md): Use the shipped `items-*` utilities to align every flex child along the cross axis. - [Align Self](https://skelementorcss.com/flexbox/align-self.md): Use the shipped `self-*` utilities to override alignment for one flex item. - [Flex Direction](https://skelementorcss.com/flexbox/direction.md): Control flex direction with row, column, and reverse direction utilities. - [Flex](https://skelementorcss.com/flexbox/flex.md): Start flex layouts with `.flex` and `.inline-flex` container utilities and their responsive variants. - [Flex Basis](https://skelementorcss.com/flexbox/flex-basis.md): Set the initial main-axis size of flex items with bundled `basis-*` utilities before grow and shrink run. - [Flex Grow](https://skelementorcss.com/flexbox/flex-grow.md): Use the bundled `.flex-grow` utility to let selected items absorb remaining space. - [Flex Shrink](https://skelementorcss.com/flexbox/flex-shrink.md): Use the bundled `.flex-shrink` utility when selected items should contract in limited space. - [Gap](https://skelementorcss.com/flexbox/gap.md): Control flex spacing with the bundled `gap-*`, `gap-x-*`, and `gap-y-*` utilities. - [Justify Content](https://skelementorcss.com/flexbox/justify-content.md): Use the shipped `justify-*` utilities to control main-axis distribution in flex layouts. - [Order](https://skelementorcss.com/flexbox/order.md): Use the shipped order helpers to move selected flex items to the start or end of the line. - [Flex Wrap](https://skelementorcss.com/flexbox/wrap.md): Control whether flex items stay on one line or wrap onto new rows. - [FAQ](https://skelementorcss.com/getting-started/faq.md): Frequently asked questions about Skelementor - [Installation](https://skelementorcss.com/getting-started/installation.md): Installation and environment checklist for the Skelementor plugin. - [Importing Classes & Variables](https://skelementorcss.com/getting-started/quickstart.md): Detailed import guide for bringing Skelementor classes and variables into Elementor v4. - [Introduction](https://skelementorcss.com/index.md): SkelementorCSS is a comprehensive utility CSS framework for Elementor v4—composable classes, design tokens, and imports that land in Elementor’s native systems. - [Aspect Ratio](https://skelementorcss.com/layout/aspect-ratio.md): Keep media frames consistent with the bundled aspect-ratio utilities. - [Display](https://skelementorcss.com/layout/display.md): Control how elements participate in layout with the bundled display utilities. - [Object Fit](https://skelementorcss.com/layout/object-fit.md): Control how images and video media fit inside fixed frames. - [Overflow](https://skelementorcss.com/layout/overflow.md): Control clipping and scrolling with the bundled overflow utilities. - [Positioning](https://skelementorcss.com/layout/positioning.md): Control positioning modes with the bundled `static`, `relative`, `absolute`, `fixed`, and `sticky` utilities. - [Z-Index](https://skelementorcss.com/layout/z-index.md): Control stacking order with the bundled z-index scale. - [Prerequisite](https://skelementorcss.com/plugin/prerequisite.md): Environment and readiness checklist before installing the Skelementor plugin. - [Quickstart](https://skelementorcss.com/quickstart.md): Install Skelementor, import the bundled framework, learn how utilities are organized, and apply classes in Elementor. - [Height](https://skelementorcss.com/sizing/height.md): Control height with size, fraction, and keyword height utilities. - [Max Height](https://skelementorcss.com/sizing/max-height.md): Control maximum height with size, fraction, and keyword max-height utilities. - [Max Width](https://skelementorcss.com/sizing/max-width.md): Control maximum width with size, fraction, and keyword max-width utilities. - [Min Height](https://skelementorcss.com/sizing/min-height.md): Control minimum height with size, fraction, and keyword min-height utilities. - [Min Width](https://skelementorcss.com/sizing/min-width.md): Control minimum width with size, fraction, and keyword min-width utilities. - [Width](https://skelementorcss.com/sizing/width.md): Control width with size, fraction, and keyword width utilities. - [Margin](https://skelementorcss.com/spacing/margin.md): Control external spacing with the shipped Skelementor margin utilities. - [Padding](https://skelementorcss.com/spacing/padding.md): Control internal spacing with the bundled Skelementor padding utilities. - [Font Size](https://skelementorcss.com/typography/font-size.md): The bundled responsive text scale from `.text-2xs` through `.text-9xl`. - [Font Weight](https://skelementorcss.com/typography/font-weight.md): Dial in typographic emphasis using `.font-*` utilities from ultra-thin to ultra-black. - [Letter Spacing](https://skelementorcss.com/typography/letter-spacing.md): Control tracking with `.tracking-*` utilities that tighten or loosen character spacing. - [Line Height](https://skelementorcss.com/typography/line-height.md): Fixed pixel leading utilities that ship as `.leading-*` in the bundle. - [Text Alignment](https://skelementorcss.com/typography/text-alignment.md): Apply semantic alignment utilities that respect document direction and layout context. - [Text Style](https://skelementorcss.com/typography/text-style.md): Use transform and decoration utilities to add emphasis without writing custom CSS. ## OpenAPI Specs - [openapi](https://skelementorcss.com/api-reference/openapi.json) ## Optional - [Community](https://www.facebook.com/share/g/1DuiKvQvtq/)