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HTML

CSS

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HTML

              
                .tabs
  input.input(name='tabs', type='radio', id='tab-1', checked)
  label.label(for='tab-1') Orange
  .panel
    h1 Orange
    p The orange (specifically, the sweet orange) is the fruit of the citrus species Citrus × sinensis in the family Rutaceae
    p The fruit of the Citrus × sinensis is considered a sweet orange, whereas the fruit of the Citrus × aurantium is considered a bitter orange. The sweet orange reproduces asexually (apomixis through nucellar embryony); varieties of sweet orange arise through mutations.

  input.input(name='tabs', type='radio', id='tab-2')
  label.label(for='tab-2') Tangerine
  .panel
    h1 Tangerine
    p The tangerine (Citrus tangerina) is an orange-colored citrus fruit that is closely related to, or possibly a type of, mandarin orange (Citrus reticulata).
    p The name was first used for fruit coming from Tangier, Morocco, described as a mandarin variety. Under the Tanaka classification system, Citrus tangerina is considered a separate species.
    
  input.input(name='tabs', type='radio', id='tab-3')
  label.label(for='tab-3') Clemantine
  .panel
    h1 Clemantine
    p A clementine (Citrus ×clementina) is a hybrid between a mandarin orange and a sweet orange, so named in 1902. The exterior is a deep orange colour with a smooth, glossy appearance. Clementines can be separated into 7 to 14 segments. Similarly to tangerines, they tend to be easy to peel.
              
            
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CSS

              
                $color--white = #FFFFFF
$color--black = #000000
$color--primary = #2AA1C0

*
  box-sizing border-box

body
  display flex
  justify-content center
  padding 10px
  background shade($color--white, 6%)
  font-family 'Source Sans Pro', sans-serif
  color tint($color--black, 20%)

  @media (min-width 600px)
    padding 60px 10px
    
h1
  margin 0
  font-family 'Bree Serif', serif
  font-size 36px
  
p
  margin-top 20px
  margin-bottom 0
  padding 0
  font-size 20px
  line-height 1.5
  
.tabs
  display flex
  flex-wrap wrap
  max-width 700px
  background shade($color--white, 10%)
  box-shadow 0 48px 80px -32px rgba(0, 0, 0, 0.3)
  
.input
  position absolute
  opacity 0
  
.label
  width 100%
  padding 20px 30px
  background shade($color--white, 10%)
  cursor pointer
  font-weight bold
  font-size 18px
  color tint($color--black, 50%)
  transition background 0.1s, color 0.1s
  
  &:hover
    background shade($color--white, 15%)

  &:active
    background shade($color--white, 20%)

  .input:focus + &
    box-shadow inset 0px 0px 0px 3px $color--primary
    z-index 1

  .input:checked + &
    background $color--white
    color $color--black
    
  @media (min-width 600px)
    width auto
  
.panel
  display none
  padding 20px 30px 30px
  background $color--white
  
  @media (min-width 600px)
    order 99    
  
  .input:checked + .label + &
    display block
              
            
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JS

              
                
              
            
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999px

Console