body {
    background: inear-gradient(135deg, #ff4e00, #ec9f05);
    font-family: Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 20px;
    box-sizing:border-box;
}
    .container {
        background: #fff;
        padding: 25px;
        width: 90%;
        max-width: 520px;
        text-align:center;
        box-shadow: 0 15px 40px rgba(0,0,0,0.3);
    }
    h1{
        margin-bottom: 10px;
    }
    input {
         width: 100%;
         max-width: 380px;
         padding: 12px;
         margin-top: 10px;
         border-radius: 8px;
         border: 2px solid #ddd;
         font-size: 16px;
    }
    button {
     margin-top: 15px;
     padding: 12px 20px;
     background: #ff4e00;
     color: white;
     border: none;
     border-radius: 10px;
     font-size: 16px;
     cursor: pointer;
}

    button:hover {
     background: #e64300;
    }

    #output {
     margin-top: 20px;
     text-align: left;
}