Cannot change font size of text field in material ui

Question

I am trying to learn material ui. I want to enlarge the text field on my page. However, the styles i embed with the field changes height, width and other properties except the size. Following is my code:

const styles = {
container: {
    display: 'flex',
    flexWrap: 'wrap',
},
textField: {
    // marginLeft: theme.spacing.unit,
    // marginRight: theme.spacing.unit,
    width: 300,
    margin: 100,
    fontSize: 50 //??? Doesnt work
}
}

Following is the stateless component(React):

const Searchbox = (props) => {

    const { classes } = props;

    return (
        <TextField
            onKeyDown={props.onKeyDown}
            id="with-placeholder"
            label="Add id"
            placeholder="id"
            className={classes.textField}
            margin="normal"
            autoFocus={true}
            helperText={"Add an existing id or select "}
        />
    );
};

export default withStyles(styles)(Searchbox);

I totally understand there is no rocket science as its a straightforward CSS in JS approach of applying styles.

However, I cannot override the base font size for my text field. Any help will be appreciated

Answer 1

As mentioned in the page TextField API apply styles to the InputProps which applies style to the input element

Here is the code

const styles = {
container: {
    display: 'flex',
    flexWrap: 'wrap',
},
textField: {
    width: 300,
    margin: 100,
},
//style for font size
resize:{
  fontSize:50
},
}

<TextField
          id="with-placeholder"
          label="Add id"
          placeholder="id"
          InputProps={{
            classes: {
              input: classes.resize,
            },
          }}
          className={classes.textField}
          margin="normal"
        autoFocus={true}
        helperText={"Add an existing id or select "}/>