style.css

body {
    background-image: url("background.jpg");
    display: flex;
    justify-content: center;
    align-items: center;
}

.mainContainer {
    padding: 0;
    text-align: center;
    font-family: "Orbitron", sans-serif;
    color: black;
    font-size: 130px;
    border-radius: 50px;
    box-shadow: 3px 3px 7px rgba(255, 255, 255, 0.05), 3px 3px 7px rgba(0, 0, 0, 0.5);
    -webkit-box-reflect: below 0px linear-gradient(to bottom, rgba(0, 0, 0, 0.0), rgba(0, 0, 0, 0.4));
    outline: none;
}

button {
    padding: 0;
    width: 150px;
    height: 40px;
    border-radius: 40px;
    background-color: rgba(14, 0, 0, 0.4);
    color: black;
    border-style: none;
    cursor: pointer;
    box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.5), 3px 3px 5px rgba(0, 0, 0, 0.5);
}

button:focus {
    box-shadow: 3px 3px 5px rgba(0, 0, 0, 0.5), -3px -3px 7px rgba(0, 0, 0, 0.5);
    outline: none;
}

button:active {
    border-style: none;
}

#dateContainer {
    font-size: 50px;
    text-align: center;
}