body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: #3f496b;
  margin: 0;
}
.container {
  max-width: 1400px;
  margin: 0 auto;
}
.grid {
  display: grid;
  grid-gap: 10px;
}
.grid-2-columns {
  grid-template-columns: 1fr 1fr;
}
.grid-3-columns {
  grid-template-columns: 1fr 2fr 2fr;
}
header {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.5)),
    url("../images/philly.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  color: whitesmoke;
  text-align: center;
  padding: 200px 0;
}
header h1 {
  font-weight: 700;
  font-size: 75px;
  line-height: 1;
  margin: 35px 0;
}
header h2 {
  font-weight: 400;
  font-size: 39px;
  line-height: 1;
  margin: 35px 0;
}
header h3 {
  font-weight: 900;
  font-size: 19px;
  line-height: 1;
  letter-spacing: 1.5px;
  margin: 35px 0;
}
header a {
  display: inline-block;
  color: black;
  background-color: whitesmoke;
  font-weight: 700;
  font-size: 13px;
  line-height: 1;
  letter-spacing: 3px;
  text-transform: uppercase;
  text-decoration: none;
  padding: 15px 30px;
  border-radius: 6px;
  margin-top: 5px;
}
p a {
  color: whitesmoke;
  font-weight: 600;
}
main {
  background-color: whitesmoke;
}
main h2 {
  color: #241d3f;
  line-height: 1;
  font-size: 26px;
  letter-spacing: 0.75px;
  margin-top: 8px;
}
main h3 {
  color: #241d3f;
  line-height: 1;
  opacity: 0.45;
  letter-spacing: 2px;
  font-size: 17px;
}
main p {
  color: #241d3f;
  line-height: 25px;
  font-size: 18px;
  letter-spacing: 1.25px;
}
.text-center {
  text-align: center;
}
section {
  max-width: 100%;
  margin: 0 auto;
  padding: 100px;
}
.img-responsive {
  width: 100%;
  aspect-ratio: 1/1;
}
.second-section {
  background: linen;
}
.grid-three-columns {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-gap: 8px;
}
.grid-three-columns img {
  width: 85%;
  aspect-ratio: 0.8/1;
}
.img-margin {
  margin-top: 25px;
}
.embed {
  width: 100%;
  aspect-ratio: 1/1;
}
.card {
  background: white;
  margin: 30px 15px;
}
.card-header.grid {
  grid-gap: 0;
}
.card-body {
  padding: 30px;
}
.picture {
  max-width: 80%;
}
main h4 {
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
  margin: 0;
}
main h5 {
  font-weight: 700;
  font-size: 18.5px;
  line-height: 1;
  margin: 0;
}
.btn {
  text-align: center;
  display: block;
  margin: 0 auto;
  font-size: 17px;
  border-radius: 6px;
  color: white;
  background-color: #607e57;
  padding: 16px;
  width: 86%;
  text-decoration: none;
}
footer h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 30px;
  opacity: 0.9;
}
footer {
  color: whitesmoke;
  background-image:
    linear-gradient(rgba(63, 73, 107, 0.9), rgba(63, 73, 107, 0.9)),
    url("../images/swann.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 48px 40px;
}
footer p {
  font-size: 15.5px;
  font-weight: 400;
  opacity: 0.8;
  margin: 20px 0;
  line-height: 25px;
}
footer ul {
  padding: 0;
}
footer li {
  list-style-type: none;
  margin: 0;
  padding: 0;
  line-height: 23px;
}
footer a {
  color: whitesmoke;
  opacity: 0.9;
  margin: 0;
  padding: 0;
}
.footer-link {
  text-decoration: none;
}
@media (max-width: 960px) {
  header {
    padding: 60px 0;
  }
  header h1 {
    font-size: 33px;
  }
  header h2 {
    font-size: 20px;
  }
  header h3 {
    font-size: 10px;
  }
  header a {
    font-size: 7.5px;
    padding: 15px 18px;
  }
  .grid {
    grid-template-columns: 1fr;
    grid-gap: 0;
  }
  section {
    padding: 30px;
  }
  .mural-img {
    display: none;
  }
  .card-header img {
    display: none;
  }
  .embed {
    aspect-ratio: 16/9;
  }
  .img-margin {
    display: block;
    margin: 10px auto;
  }
  .image-margin {
    display: block;
    margin: 10px auto;
  }
}