Webleb - UI Elements - New Year Countdown

HTML

CSS

body {
margin: 0;
display: flex;
flex-direction: column;
align-items: center;
height: 100vh;
justify-content: center;
font-family: cursive;
background-color: slateblue;
overflow: hidden;
#credits {position: fixed; bottom: 10px; right: 10px; color: black; font-size: 12px; font-family: Arial, sans-serif;}
}
h2 {
color: white;
text-align:center;
text-transform: uppercase; 
letter-spacing: 4px;   
}
.year {
font-size: 5em;
color: white;
font-weight: bold;
}
.countdown {
margin: 30px;
background-color: rgba(0, 0, 0, 0.1);
width: 100%; 
color: white;
height: 120px;
display: flex;
justify-content: center;
align-items: center;
}
.countdown div {
 margin: 0 15px;
 font-size: 2.5em;
 font-weight: 500;
 margin-top: -25px;
 position: relative;
 text-align: center;
 width: 100px;
}
.countdown div::before {
content: "";
position: absolute;
bottom: -30px;
left: 0;
font-size: 0.35em;
line-height: 35px;
text-transform: uppercase;
letter-spacing: 1px;
font-weight: 500;
width: 100%;
height: 35px;
}

.countdown #day::before {
 content: "Days";   
}
.countdown #hour::before {
    content: "Hours";   
   }
   .countdown #minute::before {
    content: "Minutes";   
   }
   .countdown #second::before {
    content: "Seconds";   
   }

JS