@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap');

*{
  box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    overflow: hidden;
    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;
    margin: 10px;
    position: relative;
    transition: flex 0.5s ease-in;
} 
.panel h2 {
    font-size: 24px;
    position: relative;
    bottom: 20px;
    left: 20px;
    margin: 0;
    opacity: 0;
}
.panel.active {
   flex: 5;
}
.panel.active h2 {
  opacity: 1;
  margin-top: 24px;
}

@media(max-width: 480px) {
   .container {
       width: 100vw;
   }
   .panel:nth-of-type(4),
   .panel:nth-of-type(5) {
       display: none;
   }
}
h2 {
  text-align: center;
  margin-top: 25px;
}