html, body {
    height: 100%;
    width: 100%;
    margin: 0;
    overflow: hidden;
    box-sizing: border-box; /* Add box-sizing */
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #000;
    font-family: 'Bebas Neue', cursive;
    color: #fff;
}

#clock {
    width: 100%;
    font-size: 180vw; /* Increased font size to 180vw */
    /* Removed text-shadow */
    font-family: 'Bebas Neue', cursive;
    padding: 0;
    margin: 0;
    white-space: nowrap;
    text-align: center;
    line-height: 1; /* Adjust line height */
}

#fullscreen-button {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 10px 15px;
    background-color: #fff;
    color: #000;
    border: none;
    cursor: pointer;
    font-size: 16px;
    z-index: 1000; /* Ensure it's above other elements */
}