body{
    width: 100%;
    height: 100%;
}
.main{
    width: 100%;
    display: flex;
    flex-direction: column;
    margin-top: 10%;
}
.row{
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    margin-top: -10%;
    margin-left: 10%;
    align-items: flex-start;
}
.column{
    opacity: 0;
    transition: 2s;
    width: 100%;
    height: auto;
    margin-left: -10%;
}
.column-img{
    width: 100%;
    height: auto;
}
.visible{
    opacity: 1;
}
.column.size-100 > .column-img{
    width: 100%;
}
.column.size-90 > .column-img{
    width: 90%;
    padding-top: 10%;
}
.column.size-80 > .column-img{
    width: 80%;
    padding-top: 20%;
}
.column.size-70 > .column-img{
    width: 70%;
    padding-top: 30%;
}
@keyframes fadeIn {
    0% {
      opacity: 0;
    }
  
    1% {
      opacity: 0;
    }
  
    100% {
      opacity: 1;
    }
  }