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HTML

              
                link(href='https://fonts.googleapis.com/css?family=Roboto', rel='stylesheet', type='text/css')
link(rel="stylesheet",href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css")

h1 Search input + animated suggestions
h2 Animation in Sass, simple script in CoffeeScript

.search-container
  .search-box
    .search-icon
      i.fa.fa-search
    input.search-input#search(type="text", placeholder="Search people")
    ul.search-results#results
              
            
!

CSS

              
                // Importing bourbon to make things easy: http://bourbon.io/
@import "bourbon"

// Useful mixins
@mixin border-radius($radius: 4px)
  @include prefixer(border-radius, $radius, webkit moz spec)
    
@mixin box-sizing($box-model)
  @include prefixer(box-sizing, $box-model, webkit moz spec)
    
/* General styles */

body
  background-color: white
  font-family: 'Roboto', Arial, sans-serif
  text-align: center
  padding-top: 30px
  font-size: 14px
  
h1
  font-size: 1.5em
  color: #666666
  
h2, a
  font-size: 0.8em
  color: #9BC788
  
h3
  color: #999
  margin-top: 40px

/* ============================ */
/* VARIABLES                    */
/* ============================ */
  
$color-primary: #9BC788
$search-width: 400px
$search-icon-width: 32px
$search-height: 40px
$visible-results: 5
/* ============================ */
/* SEARCH BAR                   */
/* ============================ */
  
.search-container
  margin: 40px auto
  width: $search-width
  
.search-box
  @include border-radius(3px)
  background-color: #f2f2f2
  height: $search-height
  position: relative
  
.search-icon
  @include box-sizing(border-box)
  float: left
  width: $search-icon-width
  height: $search-height
  color: #999
  font-size: 1.3em
  padding: 7px 15px
  
.search-input
  @include box-sizing(border-box)
  width: $search-width - $search-icon-width
  height: $search-height
  float: right
  background-color: transparent
  border: 0px
  padding: 10px
  text-transform: uppercase
  font-family: 'Roboto', Arial, sans-serif
  font-size: 1em
  position: relative
  outline: 0px
  
//useful for animation
@include keyframes(fadeInTop)
  0%
    opacity: 0
    @include transform(translateY(-1.334em) translateZ(0))
  100%
    opacity: 1

@mixin fadeInTop($dur: 1s, $delay: 0s, $fill: forwards)
  @include prefixer(animation, fadeInTop $dur $delay $fill, webkit spec)

.search-results
  list-style: none
  margin: 0
  padding: 0
  position: absolute
  z-index: 999
  width: $search-width - $search-icon-width
  max-height: $search-height * $visible-results
  overflow: scroll
  top: $search-height
  left: $search-icon-width
  text-align: left
  li
    @include box-sizing(border-box)
    padding: 10px
    height: $search-height
    background-color: $color-primary
    color: white
    font-weight: bold
    &:hover
      background-color: darken($color-primary, 7%)
      cursor: pointer
    /* ANIMATION */
    /* remove this part if you dont like the animation */
    @for $i from 1 through $visible-results
      &:nth-child(#{$i})
        /* Animation */
        @include fadeInTop(0.4s, (($i - 1)/10) * 1s )
        opacity: 0
    /* END OF ANIMATION */
  
              
            
!

JS

              
                names = [
  "Gentry",
  "Brandi",
  "Maryann",
  "Tina",
  "Harper",
  "Hayes",
  "Tamera",
  "Shauna",
  "Mcfarland",
  "Charles",
  "Ortiz",
  "Maynard",
  "Julie",
  "Gay",
  "Wiggins",
  "Navarro",
  "Hopkins",
  "Candace",
  "Tammi",
  "Horton",
  "Erna",
  "Mills",
  "Opal",
  "Wolfe",
  "Walter",
  "Bonita",
  "Eleanor",
  "Rojas",
  "Ochoa",
  "Kirk",
  "Rosario",
  "Ball",
  "Lucile",
  "Kayla",
  "Carmela",
  "Miranda",
  "Middleton",
  "Lillie",
  "Sherry",
  "Jacqueline",
  "Deirdre",
  "Mueller",
  "Debra",
  "Jodi",
  "Joyce",
  "Estrada",
  "Liz",
  "Justine",
  "Francis",
  "Benton",
  "Henrietta",
  "Elise",
  "Lang",
  "Morse",
  "Farrell",
  "Tamra",
  "Darla",
  "Amy",
  "Kristie",
  "Wyatt",
  "Mcbride",
  "Talley",
  "Fay",
  "Sweet",
  "Fern",
  "Mcintosh",
  "Clemons",
  "Travis",
  "Kirsten",
  "Rios",
  "Newman",
  "Cook",
  "Jocelyn",
  "Mcmillan",
  "Mona",
  "Bessie",
  "Francis",
  "Rosemary",
  "Beverly",
  "Chandra",
  "Luella",
  "Parrish",
  "Ronda",
  "Earlene",
  "Bright",
  "Guthrie",
  "Shana",
  "Theresa",
  "Wells",
  "Green",
  "Schroeder",
  "Russo",
  "Randolph",
  "Livingston",
  "Carroll",
  "Velasquez",
  "Dana",
  "Bridget",
  "Hines",
  "Martha",
  "Marci",
  "Fuentes",
  "Stuart",
  "Glass",
  "Alejandra",
  "Thornton",
  "Britt",
  "Jeri",
  "Leach",
  "Cleo",
  "Lela",
  "Mattie",
  "Bonnie",
  "Lucille",
  "Mamie",
  "Kelly",
  "Obrien",
  "Carol",
  "Murphy",
  "Isabella",
  "Lowery",
  "Odom",
  "Norris",
  "Mullins",
  "Florine",
  "Morales",
  "Frederick",
  "Reynolds",
  "Janine",
  "Joyce",
  "Dean",
  "Marcy",
  "Allison",
  "Rena",
  "Saundra",
  "Flossie",
  "Kristi",
  "Monica",
  "Molina",
  "Guzman",
  "Loretta",
  "Levine",
  "Oneill",
  "Mccray",
  "Mann",
  "Constance",
  "English",
  "Eula",
  "Butler",
  "Erika"
]

# Match words in a collection
findAll = (wordList, collection) =>
  collection.filter (word) ->
    word = word.toLowerCase()
    wordList.some (w) -> ~word.indexOf w

# Displays results in a list
displayResults = (resultsEl, wordList) ->
  resultsEl.innerHTML = (wordList.map (w) -> '<li>'+w+'</li>').join ''

# Handle keyboard events
searchInput = document.getElementById 'search'
resultsOutput = document.getElementById 'results'
maxResults = 7

searchInput.addEventListener 'keyup', (e) =>
    value = searchInput.value.toLowerCase().split ' '
    suggested = (if value[0].length then findAll value, names else [])
    displayResults resultsOutput, suggested
              
            
!
999px

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