* {
    margin: 0;
    padding: 0;
}
body {
    background-color: #444444;
}
.container {
    height: 200px;
    width: 90%;
    max-width: 600px;
    background-image: url('https://i.pinimg.com/1200x/cf/78/fe/cf78fe788b403ff3d41784153b10d20d.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    text-align: center;
    padding: 40px 0;
    color: #fff;
    margin: 200px auto 0;
}
header {
    height: 70px;
    background-color: #343434;
    text-align: center;
}
header .headingBox h1 {
    font-size: 60px;
    color: #a5a5a5;
}

#displayTime {
    font-size: 50px;
    color: rgb(0, 0, 0);
}

.buttonBox {
    margin-top: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}
#start {
    width: 6vw;
    min-width: 70px;
}
#stop {
    width: 4vw;
    min-width: 50px;
}
#reset {
    width: 4vw;
    min-width: 50px;
}