.main {
  max-width: 640px;
  border-radius: 320px;
  padding: 0 20px 70px;
  margin: 0 auto;
  background-color: #fff;
  box-shadow: 0 0 8px 0 rgb(34 34 34 / 20%), 0 0 20px 0 rgb(34 34 34 / 20%);
  outline: 2px dashed #fff;
}

.main__section {
  padding-top: 20px;
  padding-bottom: 20px;
}

.main__section--prime {
  position: relative;
  padding-top: 20px;
}

.main__subtext {
  font-weight: normal;
  opacity: 0.75;
}

.main__section--expand {
  overflow-x: auto;
  margin: 0 -20px;
}

.main__section--prime .main__image {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  cursor: pointer;
}

.main__paragraph {
  padding-top: 20px;
  padding-bottom: 20px;
}

.main__link {
  color: #ff6f88;
  text-decoration: none;
  font-weight: bold;
}

.main__link:hover {
  color: #ff0000;
  text-decoration: underline;
}

.main__table {
  border-collapse: collapse;
  width: 100%;
}

.main__table-caption {
  caption-side: bottom;
  text-align: center;
  padding: 10px 20px;
  font-weight: bold;
}

.main__table-cell {
  border: 1px solid #888;
  padding: 10px 5px;
  text-align: center;
  vertical-align: middle;
}

.main__table-header {
  background-color: #222;
  color: #ddd;
  font-weight: normal;
}

.main__table-row:nth-child(even) {
  background-color: #f0f0f0;
}

.main__table-row:nth-child(odd) {
  background-color: #fff;
}

.main__table-row:hover {
  background-color: #fffff0;
}

.main__button {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 0;
  outline: 2px dashed #bbb;
  cursor: pointer;
  background-color: #222;
  color: #ddd;
  margin: 40px auto 0;
  display: block;
  font-family: "Roboto", sans-serif;
  font-size: 16px;
  text-transform: uppercase;
  font-weight: bold;
}

.main__button:hover {
  background-color: #fff;
  color: #222;
}

.main__arrow {
  opacity: 0;
  position: absolute;
  top: calc(50% - 15px);
  display: block;
  font-size: 30px;
  color: #fff;
  transition: opacity .2s;
  cursor: pointer;
}

.main__arrow--left {
  left: 15px;
}

.main__arrow--right {
  right: 15px;
}

.main__section--prime:hover .main__arrow {
  opacity: 1;
}

.js-dark-theme {
  color: #ddd;
  background-color: #666;
}

.js-dark-theme .main {
  background-color: #222;
  outline: 2px dashed #222;
}

.js-dark-theme .main__table-header {
  background-color: #f0f0f0;
  color: #222;
}

.js-dark-theme .main__table-row:nth-child(even) {
  background-color: #444;
}

.js-dark-theme .main__table-row:nth-child(odd) {
  background-color: #222;
}

.js-dark-theme .main__table-row:hover {
  background-color: #343427;
}

.js-dark-theme .main__button {
  background-color: #f0f0f0;
  color: #222;
}

.js-dark-theme .main__button:hover {
  background-color: #222;
  color: #f0f0f0;
}
.js-dark-theme .main__arrow {
  color: #222;
}