*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    min-height: 100vh;
    width: 100%;
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url(https://w0.peakpx.com/wallpaper/117/204/HD-wallpaper-digital-watch.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}
.stopWatch{
    background: white;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    width: 600px;
    border-radius: 10px;
    box-shadow: 0px 0px 30px rgba(0, 0, 242, 0.475) inset;
}
span{
    font-size: 80px;
    font-weight: 700;
}
.controls{
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.controls img{
    width: 20%;
    cursor: pointer;
    margin-top: 20px;
}
#pause{
    width: 15%;
}
#play{
    width: 28%;
}
#restart{
    width: 14%;
}
img:active{
    scale: .9;
}

@media screen and (max-width: 600px) {
    .stopWatch{
        width: 100%;
    }
}
@media screen and (max-width: 450px) {
   span{
    font-size: 60px;
   }
   #pause{
    width: 10%;
}
#play{
    width: 24%;
}
#restart{
    width: 9%;
}
}
@media screen and (max-width: 450px) {
   span{
    font-size: 60px;
   }
   #pause{
    width: 10%;
}
#play{
    width: 24%;
}
#restart{
    width: 9%;
}
}