style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


body{
    background: url(./img/Background.png);
    background-repeat: no-repeat;
    background-size: cover;
}

#board{
    background: url(./img/Background.png);
    background-size: 800px 350px;
    background-repeat: no-repeat;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 400px;
    border: 2px solid black;
}

#score,h1, #Highscore{
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin: 20px 0;
}

#character{
    /* background: url(./img/clipart2159548.png); */
    /* background-color: #888; */
    position: relative;
    top: 200px;
    height: 100px; 
    width: 50px;
    left: 50px;
}

.animate{
    animation: jump 500ms;
}


#block{
    width: 20px;
    height: 20px;
    position: relative;
    top: 150px;
    left: 650px;
}

.animateblock{
    animation: block 1s infinite linear ;
}

@keyframes block{
    0%{left:600px;}
    100%{left:-5px;}
}
@keyframes jump{
     0%{top: 200px;}
     30%{top: 150px;}
     70%{top: 150px;}
     100%{top: 200px;}
}