@import url('https://fonts.googleapis.com/css?family=Muli&display=swap');

* {
  box-sizing: border-box;
}
body {
  font-family: "Muli", sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  height: 100vh;
  margin: 0;
}

.container{
  display: flex;
  width: 90vw;
}
.panel{
  background-size:auto 100%;
  background-position: center;
  background-repeat: no-repeat;
  height: 80vh;
  border-radius: 50px;
  color: #fff;
  cursor: pointer;
  flex: 0.5;
  position: relative;
  transition: flex 0.7s 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 0.3s ease-in 0.4s;
}

@media(max-width: 480px){
.container{
  width: 100vw;
}
.panel:nth-of-type(4), .panel:nth-of-type(5){
display: none;
}
}