body{
    background-image: url("/images/bg.png");
    background-repeat: no-repeat;
    font-family: sans-serif;
    background-size: cover;
    background-attachment: fixed;
    background-position: 50%;
    background-color: #000000;
    margin: 0;
    padding: 0;
}
@media (max-width: 1000px){
    body{
        background-image: url("/images/bg.png");
    }
}
.nav-links-index{
    border-radius: 10px;
    padding: 15px;
    padding-top: 20px;
    padding-bottom: 20px;
    margin: 20px auto;
    width: max-content;
    text-align: center;
    font-size: 20px;
    animation: fadeIn 0.8s;
    color: #ffffff;
    background-color: rgba(0, 0, 0, 0.6); 
    width: 70%;
}
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    border: none;
    padding: 8px 16px;
    border-radius: 10px;
    margin: 10px auto;
    
    color: #ffffff;
    background-color: #2f3136;
    transition: 0.3s;
    animation: fadeInUp 0.8s;
    width: 200px;
  }
.nav-links-index span{
    color: #ffffff;
    padding: 5px;
    font-weight: 700;
    animation: tracking-in-expand .7s cubic-bezier(.215,.61,.355,1.000) both;
}
.nav-links-index ul li{
    animation: zoomIn 2s;
    text-decoration: underline;
}
button {
    height: 50px;
    margin: 5px;
    width: 200px;
    background: #333;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    font-family: Consolas, Courier New, monospace;
    border: solid #404C5D 1px;
    font-size: 16px;
    color: rgb(161, 161, 161);
    -webkit-transition: 500ms;
    transition: 500ms;
    animation: fadeInUp 0.8s;
    border-radius: 5px;
    text-align: center;
    background: linear-gradient(145deg, #2e2d2d, #212121);
    -webkit-box-shadow: -1px -5px 15px #41465B, 
                 5px  5px 15px #41465B, 
      inset      5px  5px 10px #212121, 
      inset     -5px -5px 10px #212121;
    box-shadow: -1px -5px 15px #41465B, 
                 5px  5px 15px #41465B, 
      inset      5px  5px 10px #212121, 
      inset     -5px -5px 10px #212121;
  }
  
  button:hover {
    -webkit-box-shadow: 1px 1px 13px #20232e,
                      -1px -1px 13px #545b78;
    box-shadow: 1px 1px 13px #20232e,
               -1px -1px 13px #545b78;
    color: #d6d6d6;
    -webkit-transition: 500ms;
    transition: 500ms;
  }
  
  button:active {
    -webkit-box-shadow: 1px 1px 13px #20232e,
                       -1px -1px 33px #545b78;
    box-shadow: 1px 1px 13px #20232e,
               -1px -1px 33px #545b78;
    color: #d6d6d6;
    -webkit-transition: 100ms;
    transition: 100ms;
  }