style.css

* {
    padding: 0;
    margin: 0;
    overflow-x: hidden;
}

.game {
    width: 500px;
    height: 200px;
    border: 1px solid black;
    margin: auto;
}

#character {
    width: 33px;
    height: 50px;
    /* background-color: red; */
    background-image: url('./images/dyno_03.png');
    background-size: cover;
    position: relative;
    top: 150px;
}

.animate {
    animation: jump 0.6s linear;
}

@keyframes jump {
    0% {
        top: 150px;
    }

    20% {
        top: 120px;
    }

    40% {
        top: 100px;
    }

    60% {
        top: 100px;
    }

    80% {
        top: 120px;
    }

    100% {
        top: 150px;
    }
}

#block {
    /* background-color: blue; */
    background-image: url('./images/pixel-cactus-01.png');
    background-size: cover;
    width: 20px;
    height: 20px;
    position: relative;
    top: 130px;
    left: 500px;
    animation: block 2s infinite linear;
}

@keyframes block {
    0% {
        left: 500px
    }

    100% {
        left: -20px
    }
}

p {
    text-align: center;
    margin: 5px auto;
    padding: 5px 10px;
    width: fit-content;
    border: 1px solid black;
    border-radius: 5px;
    font-size: 20px;
    font-weight: 900;
    font-family: 'Prototype';
}

html,
body {
    height: 100%;
    width: 100%;
}

/* .paused {
    animation-play-state: paused;
} */

.final-wrap {
    height: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: antiquewhite;
}

.final-score,
.new-game-btn {
    /* background: rgb(48, 240, 240); */
    background: rgb(0, 31, 36);
    background: linear-gradient(90deg, rgba(0, 31, 36, 1) 0%, rgba(29, 114, 201, 1) 0%, rgba(0, 212, 255, 1) 100%);
    font-size: 24px;
    margin: 5px;
    padding: 5px 10px;
    border: 1px solid rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    font-family: 'Prototype';
    box-shadow: 0px 5px 10px 0px rgba(0, 0, 0, 0.5);
}

.new-game-btn:hover {
    box-shadow: 0px 5px 10px 0px rgba(0, 0, 0, 0.75);
    transform: translateY(-2px);
    background: lightblue;
    cursor: pointer;
    border: 3px solid gray;
    border-radius: 15px;
}