/*
.column {
  width: 30%;
  float: left;
  background-color:
}
*/
img {
  width: 250px;
  height: auto;
}

.column1 {
  width: 30%;
  float: left;
  background-color: yellow;
}

.column2 {
  width: 40%;
  float: left;
  background-color: blue;
}

.column3 {
  width: 30%;
  float: left;
  background-color: green;
}