style.css

@import url('https://fonts.googleapis.com/css2?family=Kanit:ital,wght@1,300&family=Open+Sans:wght@300;400&family=Sigmar&display=swap');

* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'Open Sans', sans-serif;
}

body{
    height: 100vh;
    background: linear-gradient(30deg, rgb(63, 23, 175),rgb(0, 0, 0));
    display: flex;
    align-items: center;
    justify-content: center;
}

.relogio{ 
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 200px;
    width: 550px;
    background-color: transparent;
    border-radius: 10px;
    box-shadow: 0px 10px 100px rgb(140, 0, 255);
}

.relogio div{
    height: 170px;
    width: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #f57474;
    background: rgba(5, 5, 5, .9);
    box-shadow: 0px 10px 100px rgb(255, 255, 255);
    border-radius: 7px;
    letter-spacing: 3px;
}

.relogio span{
    font-weight: bolder;
    font-size: 60px;
    text-align: center;
}


.relogio span.tempo{
    font-size: 10px;
}