.fc-event {
    background-color: #e0f4bd; /* change with your color */
}

.blokL {  
  width: 49%;
  heigth: 100%;
  background-color: #e8ed6f;
  border: 1px solid red;
  float: left;
}

.blokR {  
  width: 49%;
  heigth: 100%;
  background-color: #e8ed6f;
  border: 1px solid red;
  float: right;
}