.container-travels {
    display: flex;
    width: 90vw;
    height: 40vh;
}

.panel {
  background-size: auto 100%;
  background-position-x: center;
  background-repeat: no-repeat;
  height: 80vh;
  border-radius: 40px;
  color: white;
  cursor: pointer;
  flex: 0.5;
  margin: 10px;
  position: relative;
  transition: flex 0.4s ease-in;
}

.panel h3 {
  font-size: 24px;
  position: absolute;
  bottom: 20px;
  left: 20px;
  margin: 0;
  opacity: 0;
}

.panel.active {
  flex: 5;
}

.panel.active h3 {
  opacity: 1;
  transition: opacity 0.2s ease-in-out 0.4s;
}

@media (max-width: 480px) {
  .container-travels {
    width: 100vw;
  }

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