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              <section class="wrapper">
  <div>
    <h2>Guess A Number</h2>
    <p>Using Sass-y magic, the computer "knows" a random number between 1 and 5.</p>
    <p>See if you can guess the right one (there will be a party when you do).</p>
  </div>
  <form>
    <fieldset>
      <label for="number1" tabindex="0">
      <input type="radio" name="number" id="number1" value="1"/>
      <span>1</span>
    </label>
      <label for="number2" tabindex="0">
      <input type="radio" name="number" id="number2" value="2"/>
      <span>2</span>
    </label>
      <label for="number3" tabindex="0">
      <input type="radio" name="number" id="number3" value="3"/>
      <span>3</span>
    </label>
      <label for="number4" tabindex="0">
      <input type="radio" name="number" id="number4" value="4"/>
      <span>4</span>
    </label>
      <label for="number5" tabindex="0">
      <input type="radio" name="number" id="number5" value="5"/>
      <span>5</span>
    </label>
    </fieldset>
  </form>
</section>
            
          
!
            
              //set random number
$random-number: random(5);

//mixin for if/else
@mixin game-logic ($number) {
  @if round($random-number) == $number {
    animation: party-colors 2s infinite;
    background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/229892/ice-cream-parrot.gif);
    background-repeat: no-repeat;
    background-size: cover;
    transition: background-color 1s ease;
  }
  @else {
    background-color: grey;
    transition: background-color 1s ease;
  }
}

//include mixin for use
@each $number in 1, 2, 3, 4, 5 {
  #number#{$number}:checked + span::before {
    @include game-logic($number);
  }
}

//keyframe for party-color animation
@keyframes party-colors {
  0% {background-color: teal;}
  25% {background-color: hotpink;}
  50% {background-color: dodgerblue;}
  75% {background-color: gold;}
  100% {background-color: teal;}
}

//The following three steps style the radio buttons
//This tutorial was my reference in that process: https://www.sitepoint.com/replacing-radio-buttons-without-replacing-radio-buttons/

//"hide" radio, still keeping it accessible
//from HTML5 Boilerplate
input[type="radio"] {
  border: 0;
  clip: rect(0 0 0 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
}

//center number below "radio" button
input[type="radio"] + span {
  display: inline-block;
  text-align: center;
  width: 5.3rem;
}

//styles new clickable "radio" area
//uses the + adjacent sibling selector and the ::before pseudo element to style the click area
input[type="radio"] + span::before {
  border: 0.125em solid #346699;
  content: '';
  display: inline-block;
  height: 5rem;
  width: 5rem;
}


//general styles
body {
  color: #346699;
  font-family: Helvetica, sans-serif;
  line-height: 1.4;
}

.wrapper {
  margin: 2rem auto;
  max-width: 40rem;
  width: 95%;
}

h2 {
  font-size: 1.5rem;
  font-weight: bold;
}

div {
  margin-bottom: 2rem;
}

label {
  margin-right: 1rem;
  &:last-of-type {
    margin-right: 0;
  }
}

//removes default focus styling
label:focus {
  outline: none;
}

//adds custom focus state
label:focus input[type="radio"] + span {
  border: 2px dashed black;
  transition: border .3s ease;
}

//add border so that focus state doesn't jump
input[type="radio"] + span {
  border: 2px dashed transparent;
  transition: border .3s ease;
}
            
          
!
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