*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Arial;
}

body{
background:#042354;
display:flex;
justify-content:center;
align-items:center;
height:100vh;
}

.container{
background:white;
padding:30px;
border-radius:12px;
width:700px;
text-align:center;
box-shadow:0 10px 30px rgba(0,0,0,0.2);
}

h1{
margin-bottom:20px;
}

button{
width:100%;
padding:12px;
background:#2563eb;
color:white;
border:none;
border-radius:6px;
cursor:pointer;
font-size:16px;
}

button:hover{
background:#1d4ed8;
}

canvas{
margin-top:20px;
}