v4.6

adjust options` component and fixed issues.

v4.5

fixed options component and add .is:off

v4.4

fixed issues

v4.3

1. fixed some issues
2. add accordion item
3. remove summary and details
4. add brand color: vue, react and angular

v4.1.0

1. remove flex column`s z-index
2. .link style to button
3. add block style to .btn
4. add embed shadow style
5. fixed loader z-index
6. adjust modal style

v4.0.21b

Fixed Flex column z-index issue.

v4.0.20b

Fixed f-flex class name

v4.0.19b

add .f-flex

1. .f-flex has tow values: fixed and fluid.
2. .f-flex can use breakpoint. example: f-flex@md:fixed

add tow style class to .infoitem

1. keep the horizontal layout: .infoitem:horizontal
2. keep vertical layout: .infoitem:vertical

v4.0.18b

fixed some issues

v4.0.16b

remove button shadow