# Helpers

The `helpers` submodule in Crystal Toolkit contains a few utilities that are useful for making your app.

## Inputs

The inputs submodule contains various controls for inputting floating point numbers, matrices, boolean values, etc. with labels attached.

## Layouts

The Crystal Toolkit app makes heavy use of the Bulma CSS Framework for styling. The layouts submodule contains a few wrappers for `html.Div` with these styles pre-applied, such as `Columns`, `Box`, `Footer`, etc.

## Renderers

Three-dimensional scenes created using the Scene class can be rendered by the `Simple3DScene` Dash component, but also other tools including pythreejs (for Jupypter integration), POV-Ray (for high-quality rendering) and asymptote (for LaTeX integration).