* {
  box-sizing: border-box;
}

/* Create four equal columns that floats next to each other */
.column {
  float: left;
  width: 33.33%;
  padding: 10px;
  height: 400px; /* Should be removed. Only for demonstration */
}
.column1 {
  float: left;
  width: 33.33%;
  padding: 10px;
  height: 650px; /* Should be removed. Only for demonstration */
}

.column1A {
  float: left;
  width: 33.33%;
  padding: 10px;
  height: 150px; /* Should be removed. Only for demonstration */
}
.column2 {
  float: left;
  width: 66.66%;
  padding: 10px;
  height: 650px; /* Should be removed. Only for demonstration */
}

.column2A {
  float: left;
  width: 66.66%;
  padding: 10px;
  height: 150px; /* Should be removed. Only for demonstration */
}

/* Clear floats after the columns */
.row:after {
  content: "";
  display: table;
  clear: both;
}
/* screen */
@media screen and (max-width:992px) {
.column{width:50%;}

.column1 {
  width: 50%;}

.column2 {
  width: 100%;}
}

/* screen */
@media screen and (max-width:600px) {
.column{width:100%;}
.column1{width:100%;}
.column2A{width:100%;}
.column1A{width:100%;}
}