*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, Helvetica, sans-serif;
}

body{
    background:#f3f5f7;
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
}

.container{
    width:90%;
    max-width:900px;
    background:white;
    padding:40px;
    border-radius:15px;
    box-shadow:0 10px 30px rgba(0,0,0,.15);
}

h1{
    text-align:center;
    margin-bottom:30px;
}

textarea{
    width:100%;
    height:300px;
    padding:15px;
    font-size:18px;
    resize:none;
}

button{
    width:100%;
    margin-top:20px;
    padding:18px;
    background:#1677ff;
    color:white;
    border:none;
    border-radius:8px;
    font-size:22px;
    cursor:pointer;
}

button:hover{
    background:#0d5cd7;
}

#result{
    margin-top:20px;
    font-size:20px;
    font-weight:bold;
}