duckosaur/style.css

body {
    margin: 0;
    padding: 0;
    font-family: Helvetica;
    height: 100vh;
}

#game-div {
    height: 24vw;
    width: 100%;
    position: relative;
    top: 48vh;
    transform: translateY(-50%);
    background: linear-gradient(0deg, rgb(232, 219, 146) 0%, rgb(237, 212, 138) 33%,rgb(38, 165, 255) 100%);
}

#ducko-div {
    width: 9vw;
    height: 12vw;
    position: absolute;
    left: 4vw;
    bottom: 0;
    background-image: url(player.gif);
    background-size: cover;
}

@keyframes jump {
    0% { bottom: 0vw; }
    50% { bottom: 12vw; }
    100% { bottom: 0vw;}
}

.jumping {
    animation-name: jump;
    animation-duration: 1s;
}

.cactus {
    width: 4vw;
    height: 6vw;
    position: absolute;
    bottom: 1vw;
    background-image: url(cactus.png);
    background-size: cover;
}

#score-div {
    position: absolute;
    top: 1vw;
    right: 1vw;
    color: #fff;
    font-weight: bold;
    font-size: 2vw;
    font-family: Helvetica;
}

#text-div {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-weight: bold;
    font-size: 4vw;
    font-family: Helvetica;
    text-align: center;
    cursor: pointer;
}

footer {
    position: absolute;
    bottom: 0;
    width: 100%;
    text-align: center;
    font-family: Helvetica;
    font-weight: bold;
    font-size: 1vw;
    line-height: 0;
}