What are some ways to apply selector combinators to hashed CSS module classes?

Seeking advice on overriding a style in a CSS module for a third-party datepicker component used within a custom component. The challenge lies in targeting the correct element with a selector combinator, complicated by the dynamic creation of class names in CSS modules.

To better illustrate, here is a working example in codesandbox (open in a new tab for smaller screens).

CSS

.dateContainer {
  margin-left: 15px;
  margin-right: 15px;
  margin-top: 1em;
  width: 100%;
}

.dateContainer .react-datepicker-wrapper {
  display: block;
}

Example HTML class name appearance: https://i.stack.imgur.com/HPJmb.png

An attempt using an attribute selector:

div[class*="dateContainer"] .react-datepicker-wrapper {
 display: block;
}

The current issue involves ensuring the date field fills the div entirely. By inspecting the HTML and unchecking display: inline-block within the .react-datepicker-wrapper class, desired results are achieved.

Present layout: https://i.stack.imgur.com/I69A9.png

Desired layout: https://i.stack.imgur.com/CIvl5.png

css

Answer №1

The issue arises when utilizing a CSS module, as the class name becomes dynamically generated. This leads to difficulties in selecting the correct elements since the class name is altered (or so it seems).

Indeed, that is the root of the problem. However, the solution lies in adjusting your CSS to target the modified classes within your component. To specify that your rule should apply to a class outside the scope of your module, utilize :global:

.dateContainer :global(.react-datepicker-wrapper) {
  display: block;
}

Furthermore, even if it is unlikely for additional components to be nested within your date container, precision is key. Hence, employ the child combinator:

.dateContainer > :global(.react-datepicker-wrapper) {
  display: block;
}

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