body {
  margin: 0;
  font-family: "Segoe UI";
  background-image: url("../assets/Teaser_Image_test_04.jpg");
  background-repeat: no-repeat;
  background-size: auto;
  background-position: 50% 0%;
  background-attachment: fixed;
}

.about-content-header-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 1rem 0 1rem;
  text-align: center;
  background-color: rgba(0, 0, 0, 0.501);
}

.about-content-header-container h2 {
  color: white;
  border-bottom: 1px solid white;
  padding-bottom: 2rem;
  font-weight: 500;
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.about-content-header-container p {
  color: white;
  font-size: larger;
  margin-bottom: 2rem;
  width: 50%;
}

.about-features-container {
  /* background-color: #607d8b; */
  background-color: rgba(0, 0, 0, 0.501);
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about-features-container h2, .about-screenshot-container h2 {
  color: white;
  font-size: 2rem;
  font-weight: 500;
  border-bottom: 1px solid white;
  padding-bottom: 1rem;
  margin-bottom: 2rem;
}

.about-screenshot-container {
  display: flex;
  width: 100%;
  flex-direction: column;
  align-items: center;
  background-color: #455a64;
  border-top: 1px solid white;
}

.about-arrow {
  width: 0;
  height: 0;
  border-left: 20px solid transparent;
  border-right: 20px solid transparent;
  border-top: 20px solid white;
}

.about-features-text-container {
  width: 50%;
  color: white;
  font-size: larger;
  margin-bottom: 2rem;
  text-align: center;
}

.about-features-text-container a{
  text-decoration: none;
  color: #009688;
}

.about-features-text-container a:hover {
  color: #03cab6;
}

.about-feature-modal {
  background-color: #cfd8dc;
  color: black;
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 1px 1px 5px black;
  display: flex;
  flex-direction: column;
  margin-bottom: 3rem;
  margin: 1rem 2rem 3rem 2rem;
  align-items: center;
  transition: box-shadow ease-in-out 300ms;
  align-items: center;
  width: fit-content;
}

.about-feature-modal:hover {
  box-shadow: 1px 1px 10px black;
}

.about-feature-modal img {
  height: 30rem;
  width: auto;
  border: 4px solid #455a64;
  border-radius: 10px;
}

.about-img-row img,
.about-pdf-row img {
  margin: 1rem;
}

.about-feature-modal p {
  margin-right: 1rem;
  width: 14rem;
  border-bottom: 1px solid black;
  text-align: center;
  padding-bottom: 2rem;
}

.about-feature-modal-group {
  display: flex;
}

.about-pdf-row {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about-pdf-row img {
  width: 90%;
  height: auto;
}

/* responsive design */

@media only screen and (max-width: 769px) {
  .about-img-row {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}

@media only screen and (max-width: 670px) {
  body {
    background-repeat: no-repeat;
    background-size: auto;
    background-position: top;
  }

  .about-content-header-container p, .about-features-text-container{
    width: 90%;
  }

  .about-feature-modal-group {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}

@media only screen and (max-width: 321px) {
  .about-feature-modal {
    margin: 1rem 1rem 2rem 1rem;
  }
}

/* end of responsive design */