body{
font-family:Arial;
background:#f5f5f5;
}

.container{
width:600px;
margin:50px auto;
background:white;
padding:30px;
border-radius:12px;
}

.card{
border:1px solid #ddd;
padding:15px;
margin:10px 0;
border-radius:8px;
}

button{
padding:12px 30px;
background:#19b394;
color:white;
border:0;
border-radius:8px;
}