.mainLogo {
  background-color: black;
  text-align: center;
  width: 100%;
}
.mainLogo img{
  width: 8rem;
}
.DnD {
  background-color: #e7e7e7;
  height: 15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.areaBox {
  position: relative;
  width: 100%;
}
.waiting {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
}
.alert {
  margin-bottom: 0;
}
@media screen and (max-width: 767px){
  h1 {
    font-size: 1.5rem;
  }
  .mainLogo img{
    width: 6rem;
  }
}