body { font-size: 16px; }

h1 { font-size: 48px; }

h2 { font-size: 36px; }

h3 { font-size: 26px; }

.content__section {
  padding: 20px;
  margin-bottom: 20px;
  border: 2px solid tomato;
}

.content__title { margin-top: 0; }

.news-affix {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  left: -100%;
  -webkit-transition: 0.3s ease-in-out;
  -o-transition: 0.3s ease-in-out;
  -moz-transition: 0.3s ease-in-out;
  transition: 0.3s ease-in-out;
}

.news-affix__items {
  margin: 0;
  padding: 0;
  background-color: #333;
  display: -webkit-box;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: horizontal;
  -webkit-box-direction: normal;
  -webkit-flex-direction: row;
  -moz-box-orient: horizontal;
  -moz-box-direction: normal;
  -ms-flex-direction: row;
  flex-direction: row;
  -webkit-flex-wrap: wrap;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

.news-affix__action {
  display: block;
  color: #fff;
  padding: 15px 10px;
}

.news-affix__action:hover, .news-affix__action:focus, .news-affix__action:active {
  text-decoration: none;
  color: #e6e6e6;
  background-color: #1a1a1a;
}

.news-affix__item {
  position: relative;
  overflow: hidden;
  -webkit-box-ordinal-group: 3;
  -webkit-order: 2;
  -moz-box-ordinal-group: 3;
  -ms-flex-order: 2;
  order: 2;
}

.news-affix__item.active {
  display: block;
  -webkit-box-ordinal-group: 2;
  -webkit-order: 1;
  -moz-box-ordinal-group: 2;
  -ms-flex-order: 1;
  order: 1;
  -webkit-box-flex: 1;
  -webkit-flex: 1 0 100%;
  -moz-box-flex: 1;
  -ms-flex: 1 0 100%;
  flex: 1 0 100%;
}

.news-affix__item.active .news-affix__action { background-color: #2980b9; }

.news-affix__item.active .news-affix__bar {
  position: absolute;
  z-index: 10;
  background: #226998;
  left: 0;
  top: 0;
  height: 100%;
  width: 0;
}

.news-affix__item:not(.active) .news-affix__action { padding: 5px 10px; }

.news-affix__item:not(.active) .news-affix__chapter { font-size: 14px; }

.news-affix__item:not(.active) .news-affix__title { font-size: 10px; }

.news-affix__item.completed { opacity: .2; }

.news-affix__chapter {
  margin: 0;
  position: relative;
  z-index: 20;
}

.news-affix__title {
  margin: 0;
  position: relative;
  z-index: 20;
}

.news-affix__bar-inverse { display: none; }

.news-affix.active { left: 0; }