body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
    color: #ffffff;
    background-color: #1f1f1f;
}

header {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #1a1a1a;
    color: #ffffff;
    padding: 10px 0;
    min-height: 40px;
    max-height: 40px;
}

main {
    padding: 10px;
}

header h2 {
    position: absolute;
    left: 20px;
}

.menu {
    cursor: pointer;
    display: inline-block;
    position: absolute;
    top: 20px;
    right: 20px;
}

.menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #ffffff;
    margin-bottom: 5px;
}

.menu span:last-child {
    margin-bottom: 0;
}