* {
  box-sizing: border-box;
}
body {
  font-family: 'Montserrat', sans-serif;
  font-weight: 400;
  font-size: 16px;
  /* showing the default */
  line-height: 1.8;
}
.article {
  max-width: 1060px;
  margin: 0 auto;
  /* for mobile */
  padding-left: 30px;
  padding-right: 30px;
  padding-top: 60px;
  padding-bottom: 90px;
}
.category {
  font-family: 'Montserrat', sans-serif;
  color: #7b8994;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 1.342em;
  line-height: 1;
}
h1 {
  font-family: 'Montserrat', sans-serif;
  font-weight: bold;
  font-size: 2.415em;
  line-height: 1.2;
}
.pub-date {
  display: block;
  font-family: 'Open Sans', sans-serif;
  color: #7b8994;
  text-transform: uppercase;
  font-size: 74.5%;
  font-size: 0.745em;
}
p {
  margin-bottom: 1em;
}
h3 {
  font-size: 1.342rem;
  line-height: 1;
  margin-top: 1.8em;
  margin-bottom: 0.5em;
}
code {
  display: inline;
  vertical-align: baseline;
  padding-top: 0px;
  padding-left: 10px;
  padding-right: 10px;
  background-color: whitesmoke;
}
img {
  max-width: 100%;
}
sup {
  font-family: 'Open Sans', sans-serif;
}
figure {
  margin: 2em 0 1em;
}
figcaption {
  font-family: 'Open Sans', sans-serif;
  color: #7b8994;
  line-height: 1.8em;
  text-align: center;
  padding: 0.5em 1em;
}
.vimeo-wrapper {
  max-width: 980px;
  position: relative;
  margin: 0 auto;
  border: 1px solid green;
}
.vimeo-standard {
  float: left;
  height: 300px;
  width: 47%;
  border: 1px solid #000;
  margin: 10px;
}
iframe {
  width: 100%;
  height: 100%;
}
@media (max-width: 767px) {
  .vimeo-standard {
    float: none;
    width: 80%;
    margin: 0 auto;
    padding-bottom: 10px;
  }
}
.clearfix:before,
.clearfix:after {
  content: " ";
  /* 1 */
  display: table;
  /* 2 */
}
.clearfix:after {
  clear: both;
}
h2 {
  font-size: 1.8rem;
  line-height: 1;
  margin-top: 1em;
  margin-bottom: 0.5em;
}
.quiz {
  padding: 0 30px 20px 30px;
  max-width: 960px;
  margin: 0 auto;
}
.quiz ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.quiz-question {
  font-weight: bold;
  display: block;
  padding: 30px 0 10px 0;
  margin: 0;
}
.quiz-answer {
  margin: 0;
  padding: 10px;
  background: #f7f7f7;
  margin-bottom: 5px;
  cursor: pointer;
}
.quiz-answer:hover {
  background: #eee;
}
.quiz-answer:before {
  content: "";
  display: inline-block;
  width: 15px;
  height: 15px;
  border: 1px solid #ccc;
  background: #fff;
  vertical-align: middle;
  margin-right: 10px;
}
.quiz-answer.active:before {
  background-color: #333;
  border-color: #333;
}
.quiz-answer.correct:before {
  background-color: #17B279;
  border-color: #17B279;
}
.quiz-answer.incorrect:before {
  background-color: #B24129;
  border-color: #B24129;
}
.quiz-answer.active.correct:before {
  outline: 2px solid green;
  outline-offset: 2px;
}
.quiz-result {
  max-width: 960px;
  margin: 0 auto;
  font-weight: bold;
  text-align: center;
  color: #fff;
  padding: 20px;
}
.quiz-result.good {
  background: #17B279;
}
.quiz-result.mid {
  background: #E8D941;
}
.quiz-result.bad {
  background: #B24129;
}