Center
Center is a layout component that centers its child within itself.
import { Center, Square, Circle } from "@chakra-ui/core"
- Center: centers it's child given 
width and height - Square: centers it's child given 
size (width and height) - Circle: a 
Square with round border-radius 
Put any child element inside it, give it any width or/and height, it'll
ensure the child is centered.
<Center bg="tomato" h="100px" color="white">
  This is the Center
</Center>
Editable Example
Center can be used to create frames around icons or numbers
<HStack>
  <Center w="40px" h="40px" bg="tomato" color="white">
    <PhoneIcon />
  </Center>
  <Center w="40px" h="40px" bg="tomato" color="white">
    <Box as="span" fontWeight="bold" fontSize="lg">
      1
    </Box>
  </Center>
</HStack>
Editable Example
To reduce boilerplace, we've export Square and Circle components that
automatically centers it's children given the size.
<HStack>
  <Circle size="40px" bg="tomato" color="white">
    <PhoneIcon />
  </Circle>
  <Square size="40px" bg="purple.700" color="white">
    <PhoneIcon />
  </Square>
</HStack>
Editable Example