.containerAccordion-expanding-card{
  display: flex;
  flex-direction: row;
    margin-top: 35px;
}

.panel{
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  height: 600px;
  border-radius: 10px;
  color: #fff;
  cursor: pointer;
    flex: 2;
  margin: 10px;
  position: relative;
  transition: flex 0.7s ease-in;
    border: 1px solid #efefef;
}

.panel.active{
  flex: 5;
}



@media(max-width: 480px){

  .panel:nth-of-type(4),
  .panel:nth-of-type(5){
    display: none;
  }
}