style.css

*{
    box-sizing: border-box;
}
body{
    background-color: #404040;
    overflow: hidden;
}
.svg1{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(.6);
}
.playIcon{
    transform-origin: center;
    transition: fill 500ms, transform 500ms;
    cursor: pointer;
}
.playIcon:hover{
    fill: #0c87f9;
    transform: scale(.9);
}
.scoreboard{
    font-size: 4em;
    text-align: center;
    color: #e3e3e3;
    font-family: sans-serif;
    margin: 0;
    font-weight: 800;
}
.board{
    width: 100px;
    height: 10px;
    background-color: #e3e3e3;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translate(-50%, 0);
    border-radius: 2px;
}
.boll{
    width: 25px;
    height: 25px;
    background-color: #e3e3e3;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.timer{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #0c87f9;
    font-family: sans-serif;
    z-index: 1;
    font-size: 6em;
    margin: 0;
    animation-name: timer;
    animation-duration: 1s;
    animation-iteration-count: 3;
}
.endWindow{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    height: 400px;
    width: 400px;
    background-color: #e3e3e3;
    border-radius: 20px;
    border: 3px solid #0c87f9;
}
.again{
    width: 300px;
    height: 80px;
    border: 3px solid #0c87f9;
    border-radius: 20px;
    margin: 300px auto 0;
    transition: all 500ms;
}
.retry{
    fill: #0c87f9;
    transform: scale(.2) ;
    position: relative;
    top: -110px;
    transition: all 500ms;
}
.again:hover{
    background-color: #0c87f9;
}
.again:hover .retry{
    fill: #e3e3e3;
}
.score{
    font-size: 3em;
    color: black;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%);
    text-align: center;
    margin: 5px 0;
    line-height: 160px;
    color: #0c87f9;
    font-family: sans-serif;
    font-weight: 800;
}

@keyframes timer{
    0%{
        font-size: 30em;
    }
    100%{
        font-size: .1em;
    }
}