Change styling on hover semantic-ui-react components - css

Question

if I set up a className for certain components like
<Segment className="Change" color='blue' inverted></Segment>
and in my css I use
.Change:hover{
background-color: black; //or any other change on hover
}
nothing is overriden on the hover.
I have also noticed there are many other components that refuse changes of mine, seemingly randomly. One semantic component will let me change a width the next will not. Is the cause from the same issue? How do I override the color on a hover?

Answer 1

After reviewing the source code of Segment Component (github), I found it has two default classes: segment and ui. In addition, you used two props color=blue and inverted. So I would recommend using the following code.
.ui.segment.blue.inverted.Change:hover {
background-color: black !important;
}
Working DEMO

Answer 2

Choose any color semantic-ui provide for example:
<Form>
<Form.Input label="Email" type="email" />
<Form.Input label="Password" type="password" />
<Button color="teal" type="submit">
Sign In
</Button>
</Form>
Your button appears like:
You can add inverted props inside Button component that react semantic-ui provide
<Form>
<Form.Input label="Email" type="email" />
<Form.Input label="Password" type="password" />
<Button inverted color="teal" type="submit">
Sign In
</Button>
</Form>
your component appears like:
On hover returns to basic style opposite of inverted
styled components usage with react semantic ui
I recommended you to use styled-components in order to override semantic-ui component style
import { Tab, Form, Button, Grid, Icon } from "semantic-ui-react";
import styled from "styled-components";
const Mybutton = styled(Button)`
&:hover {
color: #fff !important;
}
`;
Next use your new styled component instead of semantic-ui
<Mybutton inverted color="teal" type="submit">
Sign In
</Mybutton>

Answer 3

Because you didn't provide more code, hard to guess what overriding style you try to change. Try to add !importanant rule to this style.
.Change:hover {
background-color: black !importanant;
}
To avoid !important, which is not always a good solution, add a more specific CSS selector, for exaple Segment.Change:hover.
UPDATE:
Try to remove color='blue' from the template and check if will work with and without !important rule.