.bigdiv {
background-image: url('http://dl7.glitter-graphics.net/pub/38/38847ts7clzsjly.gif');
background-attachment: fixed;
background-repeat: repeat;
  width:800px;
  border: red solid 10px;
  margin:20px;

}

.row1 {
  display: flex;
  margin:20px;
  
}

.column1 {
  margin:5px;
  background-color:#EB0C0C;
  flex: 50%;
  
}

.column2 {
  margin:5px;
  background-color:#F5D925;
  flex:50%;
  
}

.row2 {
  display: flex;
  margin:20px;
}
  

.column3 {
  margin:5px;
  background-color:#039100;
  flex:20%;
 
}

.column4 {
  margin:5px;
  background-color:#0231FA;
  flex:20%;
 
}
  
  .column5 {
  margin:5px;
  background-color:#EB0C0C;
  flex:20%;
 
}