<div class="container">
  <ul class="list">
    <li class="list__item">
      <input type="radio" class="radio-btn" name="choice" id="a-opt" />
      <label for="a-opt" class="label">pick me!</label>
    </li>
    
    <li class="list__item">
      <input type="radio" class="radio-btn" name="choice" id="b-opt" />
      <label for="b-opt" class="label">pick me i'm better!</label>
    </li>
    
    <li class="list__item">
      <input type="radio" class="radio-btn" name="choice" id="c-opt" />
      <label for="c-opt" class="label">pick me i'm the best!</label>
    </li>
    
    <li class="list__item">
      <input type="radio" class="radio-btn" name="choice" id="d-opt" />
      <label for="d-opt" class="label">pick me i'm fabulous!</label>
    </li>
  </ul>
</div>

$primary-color: #fff;
$accent-color: #009688;

* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

body {
  font-family: "Roboto", sans-serif;
  background: linear-gradient(to right bottom, #1b1b1e, #333);
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.list {
  flex: 0 0 20rem;
}

.list__item {
  position: relative;
  &:hover > .label {
    color: $accent-color;
    &::before {
      border: 0.5rem solid $accent-color;
      margin-right: 2rem;
    }
  }
}

.radio-btn {
  position: absolute;
  opacity: 0;
  visibility: hidden;
  &:checked + .label {
    color: $accent-color;
    &::before {
      margin-right: 2rem;
      border: 0.5rem solid $accent-color;
      background: $primary-color;
    }
  }
}

.label {
  display: flex;
  align-items: center;
  padding: 0.75rem 0;
  color: $primary-color;
  font-size: 1.25rem;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.25s linear;
}

.label::before {
  display: inline-block;
  content: "";
  height: 1.125rem;
  width: 1.125rem;
  margin-right: 0.625rem;
  border: 0.5rem solid $primary-color;
  border-radius: 50%;
  transition: all 0.25s linear;
}