style.css

body{
    margin: 0;
    padding: 0;
    background-color: rgb(187, 250, 240);
    height: 100%;
    font-family: sans-serif;
}

#container{
    color: black;
    text-align: center;
    margin: 30px;
}

#display {
    margin-top: 10vh;
    border: 1px solid rgb(138, 138, 138);
    border-radius: 5px;
    
}
h1{
    font-size: 2rem;
    font-weight: 400;
}
.time-text{
    font-size: 2vw;
    color: gray;
}

#seconds, #milliSeconds ,#hours,#minutes{
    font-size: 6vw;
}

button{
    width: 180px;
    padding:15px 10px;
    border-radius: 5px;
    background-color: #f12424;
    color: white;
    border: 1px solid white;
    margin: 10px;
    cursor: pointer;
    font-size: 1.2em;
}

button:hover{
    transition: all 0.5 ease-in-out;
    background-color: #ffffff;
    color: #f12424;
}