.div-block {
  background-color: #3a3a3a;
  flex-flow: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100vh;
  display: flex;
  position: fixed;
}

.text-block {
  color: #fff;
  text-align: center;
}

.download {
  background-color: #3a3a3a;
  border: 1px solid #fff;
  border-radius: 24px;
  margin-top: 24px;
  transition: all .2s;
}

.download:hover {
  color: #3a3a3a;
  background-color: #fff;
}