Flex provides helpful style shorthand and is a 
 with 
display: flex.
 import { Flex, Spacer } from 'native-base';
Flex: a 
 with 
display: flex Spacer: creates an adjustable, empty space that can be used to tune the spacing between child elements within Flex
Flex components come with some helpful shorthand props:
flexDirection is direction
justifyContent is justify
While you can pass the verbose props, using the shorthand can save you some time.
function Example() {
  const [direction, setDirection] = React.useState("column");
  return <Center>
      <Box>
        <Heading size="md" mb={3}>
          Primary Shades
        </Heading>
      </Box>
      <Button my={3} onPress={() => setDirection(direction === "row" ? "column" : "row")}>
        Change Flex Direction
      </Button>
      <Box>
        {
        
      }
        <Flex direction={direction}>
          <Center size={16} bg="primary.100" _text={{
          color: "gray.800"
        }}>
            100
          </Center>
          <Center size={16} bg="primary.200" _text={{
          color: "white"
        }}>
            200
          </Center>
          <Center bg="primary.300" size={16} _text={{
          color: "white"
        }}>
            300
          </Center>
          <Center size={16} bg="primary.400" _text={{
          color: "white"
        }}>
            400
          </Center>
        </Flex>
      </Box>
    </Center>;
}
You can pass Spacer to add Space between Flex items.
const Example = () => {
  return <Flex h={40} w={20} mt={6}>
      <Center size={16} bg="primary.400" rounded="xl" _text={{
      color: "white"
    }}>
        Box 1
      </Center>
      <Spacer />
      <Center size={16} bg="secondary.400" rounded="xl" _text={{
      color: "white"
    }}>
        Box 2
      </Center>
    </Flex>;
};
Flex implements 
, so all the Box Props can be passed to it, i.e. 
, 
, 
, 
 & 
 props from 
.