Custom CSS
You can add your own custom CSS to your application in the Styles tab of the application settings under the Advanced Options section.

Here you can add custom classes, target specific views, etc. There are several custom variables you can use in your CSS to represent colors and settings. These variables are listed below.
Rock Mobile provides a set of utility class selectors to help target your styling to specific platforms, device types, pages, and blocks. Each is discussed below.
If you need to target styling to a specific platform (iOS or Android) you can use the parent classes
.ios
or .android
..ios .heading1 {
font-size: 33;
}
Similar to platforms you can also target device types with
.phone
or .tablet
..phone .heading1 {
font-size: 33;
}
Need to get really specific? You can combine the two classes as shown below. In general, you should try to make your design work without too many of these specific styles.
.ios.phone .heading1 {
color: red;
}
When configuring a page you can provide a CSS class you would like to add to the page. This will allow you to scope the styling of elements on that page.
.page-aboutus .heading1 {
font-size: 33;
}
Each Rock mobile block has a CSS class assigned to it. This allows you to target the visual elements within a specific block. The pattern to use is
.block-[block type name lowercase]
. For example, the calendar block would be .block-calendarview
..block-calendarview .heading1 {
font-size: 33;
}
Each XAML component can also be targeted. The selector for the control is its name in all lowercase. For instance the
Label
control becomes label
, a DatePicker
would be datepicker
.If you wanted to style all instances of
FieldStack
you could use the CSS below.fieldstack {
border-color: #c4c4c4;
}
The CSS above would make the border color of all instances of
FieldStack
a gray color. Many controls in Rock Mobile inherit from other controls. For instance, the Address
control inherits from FieldStack
. The CSS above would not affect the Address
control. If you want all controls that inherit from another control add a ^
in front of the selector. The CSS below would select controls that are a FieldStack
or inherit from one.^fieldstack {
border-color: #c4c4c4;
}
The example below is not a best practice but shows you how you can use all of the utility classes together if needed. If you find yourself writing these types of CSS rules you're trying to swim upstream and should consider a better styling strategy.
.ios.phone.page-aboutus .block-content .heading1 {
font-size: 33;
}
Rock Mobile has a couple of custom CSS properties for use in mobile. These include:
This property allows you to add a shadow to Labels. The syntax looks like this:
-rock-text-shadow: [distanceX] [distanceY] [blurRadius] [color]
Example:
.hero .hero-title {
font-size: 24;
color: white;
-rock-text-shadow: 2 2 4 black;
}
Unlike normal CSS, referencing an invalid custom variable with the
?
syntax will cause the app to crash.Downhill includes several color variables that you can use in your CSS to reference colors defined in the administrative settings as well as a curated palette of colors that will bring consistency to your application.
Variable | Value |
?color-text | Text Color provided in the Style settings. |
?color-heading | Heading Color provided in the Style settings. |
?color-primary | Primary Color provided in the Style settings. |
?color-secondary | Secondary Color provided in the Style settings. |
?color-success | Success Color provided in the Style settings. |
?color-danger | Danger Color provided in the Style settings. |
?color-warning | Warning Color provided in the Style settings. |
?color-light | Light Color provided in the Style settings. |
?color-dark | Dark Color provided in the Style settings. |
?color-{color}-{intensity}
Example
?color-orange-400
Alert boxes are made up of three different colors:
- Background Color
- Text Color
- Border Color
These three colors are generated based on the Bootstrap alert recipe from the application colors above. The patterns for usage are:
?color-{application-color}-{property}
Example
?color-primary-background
?color-primary-border
?color-primary-text
Unlike normal CSS, referencing an invalid custom variable with the
?
syntax will cause the app to crash.Below are some additional variables you can reference:
Variable | Value |
?radius-base | The base radius that is configured. |
?spacing-base | The default value to use for margins and padding. |
?font-size-default | The default font size. |
?color-text | The default color for text. |
?color-heading | The default color for use with headings. |
?color-background | The default background color. |
Below are some additional items that behave like functions in your CSS. These allow you to run calculations to provide the CSS value.
Function | Usage |
?shell-font-scale(floatValue) | Takes the passed in floatValue number and multiplies it by the system font scale. This is usually set by the user in the device accessibility settings. |
Last modified 4mo ago