body {
  margin: auto;
  background-color: #ddd;
}

img {
  width: 100%;
}

.header-container {
  height: 160px;
  color: #fff;
  background-color: #666;
}

.bg {
  /* The image used */
  background-image: url("https://images.unsplash.com/photo-1492463104320-56094d69c6c4");
  /* Center and scale the image nicely */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.title {
  position: relative;
  max-height: 100px;
  margin-top: 30px;
}

.card-container {
  position: relative;
  margin-top: 30px;
  margin-bottom: 60px;
  padding-left: 60px;
  padding-right: 60px;
}

.card {
  margin-top: 30px;
  padding: 5px;
}

.card-img-top {
  border: 15px solid #fff;
}

.group-img-container {
  position: relative;
  margin: auto;
  padding: 0;
}

.footer {
  position: relative;
  margin: auto;
  padding-top: 30px;
  padding-bottom: 30px;
  color: #fff;
  background-color: #000;
}