#marden {
  width: 270px;
  margin: 0 auto;
}
#box1{
  display: inline-block;
  width: 90px;
  height: 300px;
  background-color: rgb(102,36,41);
}

#box2{
  display: inline-block;
  width: 90px;
  height: 300px;
  background-color: rgb(230,200,55);
}

#box3{
  display: inline-block;
  width: 90px;
  height: 300px;
  background-color: rgb(49,74,112);
}