Intro to Flexbox with Real Word Examples

If you hate floats, you will love flexbox. If you hate media queries, you will love Flexbox. Flexbox gives you more control in creating a responsive layout than the traditional box model. In this session I will introduce you to Flexbox by showing how to use it to solve common website problems. You will learn how easy it is to implement Flexbox into your existing website design.

Transcript

1. by Jennifer Bland
   Intro to Flexbox
   with real world examples
   

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2. Get the Code
   h)ps://github.com/jenniferbland/intro-to-flexbox
   

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3. CSS History
   •Support for the box model
   •Float images to right or leC of each other
   •PosiEoning using Absolute and Fixed
   

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4. Why Flexbox?
   •One of several new CSS layout models
   •Designed to make craCing CSS layouts easy
   •Allows you to control alignment, spacing and

   sizing of elements relaEve to their parents
   

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5. Flexbox Benefits
   •W3C Standard
   •No libraries needed
   •No longer need floats and clears
   •Override source order with CSS
   •Custom responsive layouts
   

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6. Flexbox Support
   

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7. Using Flexbox
   •Define a parent element as a Flex Container
   •All child elements become Flex Items
   •Flexbox properEes can then control orientaEon,

   alignment, size and spacing of child Flex Items
   •Flex Containers are set to either row or column

   orientaEon
   

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8. Defining Flex Elements
   •First define elements on page as Flex Containers
   •In css add

   display: flex;
   Example_01
   

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9. Understanding Flex Axis
   •Flexbox has a main axis and a cross axis which 

   control the distribuEon and layout of elements
   • main axis - is the axis along which the flex items

   follow each other
   • cross axis - axis perpendicular to the main axis
   

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10. Flex-DirecEon
    •Flex Container direcEon can be either row or column
    •Defined by flex-direcEon
    •Default is row
    Example_02
    

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11. Flex Container is Row
    

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12. Flex Container is Column
    

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13. Real Word Example - Calculator
    •Using what we have earned about Flex Container 

    and Flex Items we will start creaEng our calculator
    Example_03a & b
    

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14. Content Wrapping
    •By default all Flexbox Containers are single lined
    •Size, align and space Flex Items along that single line
    •Use flex-wrap property to get Flex Items to wrap

    to a new line
    •Default value is nowrap
    Example_04
    

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15. flex-flow shorthand
    •Shorthand for flex-direcEon and flex-wrap properEes
    •Default is row nowrap
    Example_05
    

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16. Flex Grow
    •Represents how much the flex item will grow relaEve

    to the rest of the flex items in the container once

    posiEve space has been distributed
    •Default value is 0
    

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17. Flex Shrink
    •Represents how much the flex item will shrink 

    relaEve to the rest of the flex items in the container

    once negaEve space has been distributed
    •Default value is 1
    

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18. Flex Basis
    •Represents iniEal main size of a flex item before

    free space is distributed
    •Default value is 0
    

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19. Flex Property
    •Flex Grow
    •Flex Shrink
    •Flex Basis
    •These properEes are used to define flex item size in

    relaEon to other flex items and how to grow or shrink
    

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20. Real World Example - Calculator
    •Using flex-grow, flex-shrink and flex-basis we can

    finish styling on our calculator
    Example_06
    

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21. Controlling Alignment
    •Flex Container has two axis - main axis and cross axis
    •There are controls for controlling alignment on either

    main axis or cross axis
    

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22. JusEfy Content
    •Defines alignment along the main axis
    •Distributes extra free space leC over
    •Default: flex-start
    

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23. JusEfy Content - row
    Example_07
    

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24. JusEfy Content - column
    Example_08
    

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25. Align Items
    •Sets default behavior for how Flex Items are laid out

    along the cross axis on the current line
    •Default: stretch
    

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26. Align Items
    

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27. Align Content
    •Aligns a Flex Container’s lines within when there is

    extra space in the cross axis
    •Default: stretch
    

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28. Align Content
    

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29. Real Word Examples
    h)ps://github.com/jenniferbland/made-with-flexbox
    

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30. NavigaEon
    

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31. Center Image on Screen
    

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32. Responsive Website Layout
    

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33. Input Addon
    

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34. 3 Column Layout
    

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35. h)p://www.jenniferbland.com
    h)ps://github.com/jenniferbland/
    jennifer@jenniferbland.com
    @ratracegrad
    

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