html,body{
margin:0;
padding:0;
background:black;
height:100%;
display:flex;
justify-content:center;
align-items:center;
overflow:hidden;
}

#poster{
max-width:100vw;
max-height:100vh;
cursor:pointer;
}

.hidden{
display:none;
}

form{
display:flex;
flex-direction:column;
gap:12px;
width:320px;
}

input,textarea,button{
background:black;
color:white;
border:1px solid white;
padding:10px;
font-size:16px;
font-family:Arial,sans-serif;
}

button{
cursor:pointer;
}