* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto Mono';
}
  
body{
    width: 100vw;
    height: 100vh;
    margin: auto;
    color: #eee;
    background: #222;
    
    display: flex;
    flex-direction: column;
    align-items: start;
    justify-content: center;
}
      /* width */
    ::-webkit-scrollbar {
      width: 1px;
      margin: -10px;
    }
  
    /* Track */
    ::-webkit-scrollbar-track {
      box-shadow: inset 0 0 5px grey; 
      border-radius: 1px;
    }
  
    /* Handle */
    ::-webkit-scrollbar-thumb {
      background: red; 
      border-radius: 1px;
    }
  
    /* Handle on hover */
    ::-webkit-scrollbar-thumb:hover {
      background: #b30000; 
    }
  
  .content-box{
    width: 700px;
    margin: auto;
  }
  
  .card-section{
    display: flex;
  }
  
  .card-container{
    position: relative;
    width: 250px;
    height: 320px;
    margin-right: 15px;
  }
  
  .card-content{
    position: absolute;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: all 0.5s ease;
  }

  .card-content:active{
    transform: rotateY(180deg);
  }
  
  .card-front,
  .card-back{
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 20px;
    
    background-color: #313131;
    display: flex;
    flex-direction: column;
    
    box-shadow: 1px 1px 15px 2px black;
  }
  
  .card-front{
    
    text-align: center;
    justify-content: space-evenly;
  }

  .card-title{
    padding: 20px;
    font-weight: 600;
  }

  
  .card-back{
    transform: rotateY(180deg);
  }

  .card-info{
    padding: 20px;
    display: flex;
    flex-direction: column;
    grid-gap: 20px;
  }