body {
    margin: 0;
    min-height: 100vh;
    background-image: url("yae.jpg"); 
    background-size: 100% auto;      
    background-position: center;  
    background-repeat: no-repeat; 
    background-attachment: fixed; 
  }
  
  .card {
    max-width: 600px;
    margin: auto;
    border-radius: 1rem;
    box-shadow: 0 0 20px rgba(0,0,0,0.2);
    background: none;
    color: white;
    text-shadow: 
    -1px -1px 0 black,  
     1px -1px 0 black,
    -1px  1px 0 black,
     1px  1px 0 black; 
  }
    
  
  
  .card_title {
    font-size: 28px;
    font-weight: 600;
  }
  
  .card_title-info {
    font-size: 20px;
    color:white;
    font-weight: 600;
  }

  .form-check-label {
    font-size: 20px;
    font-weight: 600;
  }
  
  .form-label {
    font-size: 20px;   
    font-weight: 600;    
  }

  #shift {
    width: 150px;
  }