body {
    margin: 25px;
    font-family: Helvetica, Arial, sans-serif;
    font-size: 14px;
    text-align: center;
}

h1 {
    margin: 25px 0;
    font-size: 24px;
    font-weight: bold;
}

.btn {
    cursor: pointer;
    display: inline-block;
    margin: 25px 0;
    padding: 5px 20px;
    border: 1px solid black;
    background-color: white;
}

.loader {
    display: none;
}

.result {
    display: none;
}