body {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 16px;
  padding: 20px;
}

.header {
  margin-bottom: 40px;
  display: block
}
.header p {
  text-align: center;
}
.logo {
    margin-left: auto;
  margin-right: auto;
    display: block

}

.c-gridlist {
  text-transform: lowercase;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  display: grid;
  grid-gap: 40px;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}
@media only screen and (min-width: 740px) {
  .c-gridlist {
    display: flex;
    flex-direction: column;
  }
}

.product-teaser {
  display: flex;
  flex-direction: column;
  padding-bottom: 10px;
  border-bottom: 3px solid black;
}
.product-teaser header {
  margin-bottom: 10px;
}
@media only screen and (min-width: 740px) {
  .product-teaser {
    flex-direction: row;
    margin-bottom: 20px;
  }
  .product-teaser header {
    margin-right: 20px;
    width: 200px;
    flex-shrink: 0;
    margin-bottom: 0;
  }
  .product-teaser main {
    margin-right: 20px;
    flex-grow: 2;
  }
  .product-teaser footer {
    flex-shrink: 0;
  }
}
.product-teaser main {
  flex-grow: 2;
}
.product-teaser footer {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}
@media only screen and (min-width: 740px) {
  .product-teaser footer {
    flex-direction: column;
  }
}
.product-teaser__image {
  margin: 0;
}
.product-teaser__image img {
  max-width: 100%;
  max-height: auto;
  width: 100%;
  height: auto;
  display: block;
}
.product-teaser__name {
  margin: 0;
}
.product-teaser__category {
  margin-bottom: 10px;
}
.product-teaser__isbn {
  font-family: monospace;
  font-size: 12px;
  margin-bottom: 10px;
}
.product-teaser__description {
  padding-bottom: 20px;
  font-weight: normal;
  margin: 0;
}
.product-teaser details {
  padding-bottom: 20px;
}
@media only screen and (min-width: 740px) {
  .product-teaser details {
    padding-bottom: 0;
    padding-right: 20px;
  }
}
.product-teaser details summary {
  cursor: pointer;
  line-height: 20px;
  padding-left: 25px;
  background-image: url(data:image/svg+xml;base64,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);
  background-size: 20px 20px;
  background-position: center left;
  background-repeat: no-repeat;
}
.product-teaser details summary::-webkit-details-marker {
  display: none;
}
.product-teaser__more {
  margin-top: 10px;
  font-size: 12px;
}
.product-teaser__price {
  text-align: right;
  margin-right: 10px;
}
@media only screen and (min-width: 740px) {
  .product-teaser__price {
    margin-bottom: 10px;
    margin-right: 0;
  }
}
.product-teaser__price-value {
  font-size: 40px;
}
.product-teaser__price-value-currency {
  font-size: 22px;
  font-weight: 600;
}
.product-teaser__price-value-cent {
  font-size: 18px;
  font-weight: 600;
  position: relative;
  bottom: 15px;
  border-bottom: 3px solid black;
}
.product-teaser__price-info {
  font-size: 10px;
}
.product-teaser .button {
  text-align: right;
}

.button {
  border: 3px solid #000;
  padding: 8px 16px;
  display: inline-block;
  text-decoration: none;
  color: black;
  background-color: white;
}
.button:hover {
  background-color: black;
  color: white;
}