How to add sliding animation MUI using CSS

Question

I am facing an issue of adding the slide animation on the question and answer. I want on click of the radio button the slide effect comes and next question comes with Slideup animation.

<Grid item xs={12} sm={8} md={8}>
  
    <Slide direction="up"  
    in={checked} 
    appear={true} 
    mountOnEnter 
             unmountOnExit
    timeout={{ enter: 1000 , exit: checked ? 1 : 900}}
>   
        <Card variant="outlined" sx={{ bgcolor: "#bea"}} elevation={0}>
            <CardContent>

            <form onSubmit= {handleSubmit}>
                    <CardActions>
                  <Button type="submit" color="warning" variant="outlined" disabled={currentQuestion===0} className={classes.button} onClick={previousQuestion}>
                      Previous</Button>
                  </CardActions>              
                  <FormControl component='fieldset' className={classes.formControl}
    data-hidden={questions[currentQuestion].number !==
      currentQuestion[questions[currentQuestion] .number]} >
    <FormLabel component='legend'>
      {questions[currentQuestion].question}
    </FormLabel>
    <FormLabel component='legend'>
      {questions[currentQuestion].description}
    </FormLabel>
    <RadioGroup
      aria-label='quiz'
      name='quiz'
      value={questions[currentQuestion].value}
      checked={checked}
      onChange={(e)=> handleRadioChange(questions[currentQuestion].number, e)}
      sx={{
        color: pink[800],
        '&.Mui-checked': {
          color: blue[600],
        },
      }}>
      {options.map((option) => (
        <FormControlLabel
          key={option.score}
          value={option.score}
          control={<Radio  sx={{
            color: pink[800],
            '&.Mui-checked': {
              color: blue[600],
            },
          }}/>}
          label={option.label}
         
        />
      ))}
    </RadioGroup>
  </FormControl>
                    <CardActions>
                    <Button type="submit" variant="contained" color="primary" className={classes.button} disabled={currentQuestion != 5} onClick={handleSubmit}>
                    Submit
                </Button>
              </CardActions>
                </form>
                </CardContent>
                </Card>
                </Slide>

This is not working smoothly. So please help. The problem is on click of previous button the value disappeared. The slide effect is not flawless.

Answer 1

Wise man, Jason, helped me in the comments.

Classes like these work:

    [Serializable]
    public class Exercises
    {
        public string _id { get; set; }
        public string[,] text { get; set; }
        public int order { get; set; }
        public int time { get; set; }
        public int __v { get; set; }
    }


    [Serializable]
    public class UpperEx
    {
        public Exercises intro { get; set; }
        public Exercises[] main { get; set; }
        public Exercises end { get; set; }
    }

And deserialization looks like this:

UpperEx ex = JsonConvert.DeserializeObject<UpperEx>(result);