*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    color: white;
}

body {
    background-color: #000;
}

#main-container {
    height: 100vh;
    width: 100vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#time-container {
    display: flex;
    font-size: 210px;
}

.buttons-container {
    display: flex;
}

#start, #stop, #reset {
    color: black;
    margin: 10px;
    padding: 20px 30px;
    border-radius: 80px;
    background: white;
    font-size: 20px;
    font-weight: bold;
}