body {
    background: #0f0c1b;
}

.container {
    width: 600px;
    border: 3px solid #9b59b6;
    box-shadow: 0 0 15px #9b59b6;
    text-align: center;
    margin: auto;
    padding: 20px;
}

h1 {
    color: #9b59b6;
}

#atta {
    width: 300px;
}

.btn {
    background: #9b59b6;
    color: white;
    padding: 10px;
    margin: 5px;
    cursor: pointer;
}