html {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: #f0f0f0;
    font-family: Arial, sans-serif;
    color: #333333;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

::selection {
    background-color: #444444;
    color: #ffffff;
}
::-moz-selection {
    background-color: #444444;
    color: #ffffff;
}