ReactNative View 包裹内容宽度

<View
    style={{
                  alignSelf: 'flex-start',
                  borderBottomWidth: scaleSize(12),
                  borderBottomColor: Colors.primary,
                }}
              >
                <Text
                  style={{
                    fontSize: 28,
                    color: 'white',
                    fontWeight: 'bold',
                  }}
                >
                login
                </Text>
</View>                

image.png