body {
    font-family: sans-serif;
}

.container {
    width: 400px;
    margin: 0 auto;
    padding: 20px;
    border: 1px solid #ccc;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -webkit-transform: (-50%, -50%);
}

h1 {
    text-align: center;
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    margin-bottom: 10px;
}

input[type="submit"] {
    background-color: #04AA6D;
    color: #fff;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
}