style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    height: 100vh;
    width: 100%;
}
.watch-container{
    width: 100%;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.watch-container p{
    padding: 5px;
    letter-spacing: 1px;
    font-size: 72px;
    box-shadow: rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 2px 6px 2px;
}
.watch-container p span{
    box-shadow: rgba(0, 0, 0, 0.06) 0px 2px 4px 0px inset;
}
.clock-button{
    cursor: pointer;
    text-decoration: none;
    border: none;
    padding: 10px;
    margin: 5px;
    color: white;
    border-radius: 5px;
    min-width: 170px;
    font-size: 20px;
    box-shadow: rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 2px 6px 2px;
}
#startBtn{
    background-color: green;
}
#stopBtn{
    background-color: red;
    display: none;
}
#reset{
    background-color: darkgrey;
}
.min-width{
    display: inline-block;
    min-width: 100px;
    text-align: center;
    font-size: 70px;
    padding: 10px;
}
.stopwatch-buttons{
    margin-top: 20px;
}
.input-items{
    display: flex;
    margin: 10px;
    box-shadow: rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 2px 6px 2px;
}
.input-box{
    width: 108px;
    height: 65px;
    margin: 5px;
    padding:5px;
    font-size: 40px;
    border: none;
    outline: none;
    box-shadow: rgba(0, 0, 0, 0.06) 0px 2px 4px 0px inset;
}
.input-group{
    display: flex;
    flex-direction: column;
}
.input-label{
    margin: 5px;
    font-size: 30px;
}
#outputContainer{
    display: none;
}
.project-heading{
    margin-bottom: 60px;
}
.project-heading h1{
    text-transform: capitalize;
    font-size: 40px;
}