style.css

@font-face {
    font-family: "Digital-7";
    src: url(digital-7\ \(mono\).ttf);
}
body {
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100vh;
    justify-content: center;
    background-size: cover;
    overflow: hidden;
}
h2 {
    text-transform: uppercase;
    font-family: sans-serif;
    letter-spacing: 4px;
    font-size: 14px;
    text-align: center;
    color: black;
} 
.clock {
    display: flex;
    font-family: 'Digital-7';
} 
.clock div {
    margin: 5px;
    position: relative;
}
.clock span {
    width: 100px;
    height: 80px;
    opacity: 0.8;
    color: black;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 50px;
}  
.clock .text {
    height: 30px;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.8;
} 
.clock #ampm {
    bottom: 0;
    position: absolute;
    width: 60px;
    height: 30px;
    font-size: 20px;
}