style.css

@import url('https://fonts.googleapis.com/css2?family=Orbitron&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Space+Mono&display=swap');

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    color:white;
    background: rgb(46, 45, 45);
    width: 100w;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: row;
    gap: 40px;
    font-family: helvetica;
    transition: ease .8s;
}
.input-container{
    width: 500px;
    height: auto;
    display: flex;
    gap: 10px;
    flex-direction: column;
   
    font-family: 'Orbitron', sans-serif;
}
.input-container p{
    font-family: 'Space Mono';
    display: none;
}
textarea{
    background: rgb(46, 45, 45);
    color:white;
    width: 100%;
    height: 50px;
    padding: 10px;
    transition: ease .3s;
    outline: none;
}

.choice-container{
    background: rgb(46, 45, 45);
    width: 500px;
    height: 80%;
    position: relative;
    transition: ease 1s;
    display: none;
    animation-name: fade;
    animation-duration: .6s;
    justify-content: space-between;
    flex-direction: column;
    border-radius: 10px;
    
}
.choices{
    height: 90%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 10px;
    margin: 15px;
}
.choice{
   display: inline-block;
   margin: 5px 7px ;
   color: black;
   background: white;
   padding: 5px 8px;
   font-weight: bold;
   font-size: 1.4rem;
   border-radius: 5px;
}

.choice.highlight{
    background: rgb(97, 96, 96);
    color: rgb(255, 251, 251);
}
.instruction{
    font-family: 'Space Mono';
    color: white;
    text-align: center;
    border: 1px solid white;
    padding: 5px;
}
.chosen{
    position: absolute;
    top: 0;
    left:0;
    height: 100%;
    width: 0;
    background: white;
    z-index: 2;
    font-family: 'Orbitron';
    font-size: 3rem;
    display: flex;
    font-weight: bolder;
    justify-content: center;
    align-items: center;
    transition: ease 2s;
    text-align: center;
}
@keyframes fade{
    0% {
      opacity: 0;
      transform: translate3d(100%, 0, 0);
      transform: translate3d(100%, 0, 0);
      height: 100px;
    }
    70%{
        height: 100px;
    }
    100% {
      opacity: 1;
      transform: none;
      transform: none;
    }
  }
  @keyframes fadeoutwhite{
      0%{ display: block;
          opacity: 1;
          box-shadow: inset 0 0px 0px rgb(0, 0, 0);
      }
      80%{
          opacity: 1;
          box-shadow: inset 0px  100px 0px rgb(0, 0, 0);
      }
      100%{
          opacity: 0;
          display: none;
        
      }
  }

  @keyframes showresult{
      0%{
          width: 0;
         
      }
      30%{
          width: 100%;
          height: 100%;
      }
      70%{
          width: 100%;
          height: 100%;
         
      }
      100%{
          width: 0;
        
      }
  }
  @media (max-width: 800px) {
      body{
          flex-direction: column;
          padding: 20px;
      }
      .input-container{
          width: 90%;
      }
      .input-container p{
          font-size: .8rem;
      }
      textarea{
        max-height: 80px;
      }
      .instruction{
          font-size: .7rem;
      }
      .choice-container{
          width: 90%;
      }
  }