* {
  box-sizing: border-box;
}

body {
  font-family: Tahoma, Arial;
}

@media (min-width: 768px) {
  .quiz-app {
    width: 750px;
  }
}
@media (min-width: 992px) {
  .quiz-app {
    width: 970px;
  }
}
@media (min-width: 1200px) {
  .quiz-app {
    width: 1170px;
  }
}

.quiz-app {
  background-color: #f8f8f8;
  padding: 15px;
  margin-left: auto;
  margin-right: auto;

  .quiz-info {
    display: flex;
    background-color: #fff;
    padding: 20px;
    .category {
      flex: 1;
    }
    .count {
      flex: 1;
      text-align: right;
    }
  }
  .quiz-area {
    background-color: #fff;
    padding: 20px;
    margin-top: 15px;
    & h2 {
      margin: 0;
    }
  }

  .answers-area {
    background-color: #fff;
    padding: 0 20px 20px;
    .answer {
      background-color: #f9f9f9;
      padding: 15px;
    }
    .answer:not(:last-child) {
      border-bottom: 1px solid #dfdfdf;
    }
    .answer input[type="Radio"]:checked + label {
      color: #0075ff;
    }
    .answer label {
      cursor: pointer;
      font-weight: bold;
      color: #777;
      font-size: 14px;
      margin-left: 5px;
      position: relative;
      top: -1px;
    }
  }
  .submit-button {
    background-color: #0075ff;
    display: block;
    width: 100%;
    padding: 15px;
    border: none;
    color: #fff;
    font-weight: bold;
    font-size: 18px;
    cursor: pointer;
    border-radius: 6px;
    margin: 20px auto;
  }
  .submit-button:focus {
    outline: none;
  }
  .bullets {
    border-top: 1px solid #dfdfdf;
    background-color: #fff;
    display: flex;
    padding: 20px;
    .spans {
      flex: 1;
      display: flex;
      & span {
        width: 20px;
        height: 20px;
        background-color: #ddd;
        margin-right: 5px;
        border-radius: 50%;
      }
      & span.on {
        background-color: #0075ff;
      }
    }
  }
  .results {
    & span.bad {
      color: #dc0a0a;
    }
    & span {
      font-weight: bold;
    }
    & span.bad {
      color: #dc0a0a;
    }
    & span.good {
      color: #009688;
    }
    & span.perfect {
      color: #0075ff;
    }
  }
}