CSS file selector for Reactstrap component

What is my goal?

I noticed a gap between my jumbotron and footer that I want to remove. Initially, I was able to achieve this by setting the margin-bottom to 0px, but it required passing an ID to the Jumbotron element. Now, my objective is to accomplish the same result without using IDs, but rather classes.

I prefer not to use inline styles and instead would like the styling to be done in a separate CSS file.

In a previous project (using react-bootstrap, not reactstrap), I recall being able to target all components of a specific type with a certain class, as shown in the CSS snippet below.

It seems that the issue may lie within the selector in the CSS file. I have searched online for a solution that specifically addresses this in a separate CSS file, rather than through inline styling, but haven't found much guidance.

MainContent.js

import React from 'react';
import './MainContent.css';
import { Jumbotron, Button, Form, FormGroup, Label, Input, Container } from 'reactstrap';

const MainContent = () => {
    return (
        <Container>
            <Jumbotron>
                <Form>
                    <FormGroup>
                        <Label for="exampleEmail">Email</Label>
                        <Input type="email" name="email" id="exampleEmail" placeholder="with a placeholder" />
                    </FormGroup>
                    <FormGroup>
                        <Label for="examplePassword">Password</Label>
                         <Input type="text" name="password" id="examplePassword" placeholder="password placeholder" />
                    </FormGroup>
                    <Button>Submit</Button>
                </Form>
            </Jumbotron>
        </Container>
    );
}

export default MainContent;

MainContent.css

.Container {
   margin-bottom: 0px;
}

.Jumbotron {
    margin-bottom: 0px;
}

Answer №1

If you prefer not to use IDs or inline-styles, there is a clever workaround that I like to call a styling hack.

In MainContent.js, include the className attribute in your component like so:

<Jumbotron className="jumbotron">

Then, in MainContent.css, make sure to add !important to any rules you want to take precedence over other styles:

.Container {
    margin-bottom: 0px;
}

.Jumbotron {
    margin-bottom: 0px !important;
}

If you don't override the styles as shown above, the default margin-bottom: 2rem from node_modules/bootstrap/dist/css/bootstrap.css will be applied.

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