body {
  font-size: 1.2rem;
  background-color: #f5f6fa;
}

#main {
  margin: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 4rem;
}

.container {
  max-width: 780px;
  margin: auto;
  background: #fff;
  border: solid #fff 3px;
}

.main-img img, 
.imgs img {
  width: 100%;
}

.imgs img {
  height: 118px;
  width: 190px;
}

.imgs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-gap: 5px;
}

#expired {
  display: none;
  color: red;
  margin-top: 5rem;
}

#expired h1 {
  text-align: center;
}

#downloadButton {
  text-decoration: none;
  background-color: #475967;
  color: white;
  border: 1px solid gray;
  padding: 0.9rem;
  font-size: 1.2rem;
  border-radius: 10px;
  width: 70px;
  text-align: center;
  transition: 0.25s;
  margin-bottom: 3rem;
}

#downloadButton:hover {
  background-color: #333;
}

h4 {
  margin-bottom: 2rem;
}