When using USS, you can specify values for built-in VisualElement
properties or for custom properties in your UI(User Interface) Allows a user to interact with your application. More info
See in Glossary code.
In addition of reading their values from USS files, built-in property values can be assigned to in C#, using the C# properties of VisualElement
. Values assigned in C# override values from a Unity style sheet (USS).
You can extend USS with the Custom Properties API.
This section lists the supported types.
The following keywords have special meaning:
auto
inherit
unset
true
false
none
Limitation: The keywords auto
, inherit
, and unset
are imported correctly, but are not supported at runtime.
UIElements does not support units. All property types are assumed to be specified in pixelsThe smallest unit in a computer image. Pixel size depends on your screen resolution. Pixel lighting is calculated at every screen pixel. More info
See in Glossary.
Numeric values are floating points or integer literals. For example: flex:1.0
or width:200
. Numeric values are stored as floating-point numbers, including integer literals.
Enumerations are only supported for enum-based, built-in properties. Enumerations provide a readable name instead of a number. For example: position-type:absolute
.
UIElements supports the following literal color values and functions:
#FFFF00
(rgba one byte per channel), #0F0
(rgb)rgb(255, 255, 0)
rgba(255, 255, 0, 1.0)
hsl(0, 100%, 50%)
You can reference assetsAny media or data that can be used in your game or Project. An asset may come from a file created outside of Unity, such as a 3D model, an audio file or an image. You can also create some asset types in Unity, such as an Animator Controller, an Audio Mixer or a Render Texture. More info
See in Glossary with either the resource()
or url()
functions. For example, specify background-image: resource("Images/img.png")
to specify the img.png
in the Images
directory as the background image. Referenced assets are resolved during import.
The resource()
function accepts files located under either the Resources
folder or the Editor Default Resources
folder, with the following caveats:
Resources
folder, do not include the file extension. For example: background-image: resource("Images/my-image")
.Editor Default Resources
, you must include the file extension. For example: background-image: resource("Images/default-image.png")
.The url()
function expects the file path to be relative to either the project root or the folder containing the USS file. You must include the file extension. For example: background-image: url("Images/my-image.png")
.
For textures, if a file has a version with a @2x
suffix, this file is automatically loaded for retina or High DPI screens.
Use quotes to specify a string value. For example: my-property: "foo"
.
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Is something described here not working as you expect it to? It might be a Known Issue. Please check with the Issue Tracker at issuetracker.unity3d.com.
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thanks for helping to make the Unity documentation better!
When you visit any website, it may store or retrieve information on your browser, mostly in the form of cookies. This information might be about you, your preferences or your device and is mostly used to make the site work as you expect it to. The information does not usually directly identify you, but it can give you a more personalized web experience. Because we respect your right to privacy, you can choose not to allow some types of cookies. Click on the different category headings to find out more and change our default settings. However, blocking some types of cookies may impact your experience of the site and the services we are able to offer.
More information
These cookies enable the website to provide enhanced functionality and personalisation. They may be set by us or by third party providers whose services we have added to our pages. If you do not allow these cookies then some or all of these services may not function properly.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
These cookies may be set through our site by our advertising partners. They may be used by those companies to build a profile of your interests and show you relevant adverts on other sites. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. If you do not allow these cookies, you will experience less targeted advertising. Some 3rd party video providers do not allow video views without targeting cookies. If you are experiencing difficulty viewing a video, you will need to set your cookie preferences for targeting to yes if you wish to view videos from these providers. Unity does not control this.
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.