body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
  }
  
  #main {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .title {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
  }
  
  .loader {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  .column {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 30px;
  }
  
  .row {
    display: flex;
    align-items: center;
    justify-content: space-around;
    width: 600px;
  }
  
  .result {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
  }
  
  .container {
    position: relative;
    width: 300px;
    height: 200px;
    margin-top: 20px;
  }
  
  .input_video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
  }
  
  .showhand {
    text-align: center;
  }
  
  .waiting {
    font-size: 20px;
    font-weight: bold;
  }
  
  #video_content {
    width: 300px;
    height: 200px;
    border: 2px solid black;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  #result_text {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
  }
  
  #next_round {
    font-size: 20px;
    margin-bottom: 20px;
  }
  
  #restart_btn {
    margin-top: 20px;
  }
  
  .mdc-button {
    margin-top: 20px;
  }