body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: white;
}
.game-container {
    position: relative;
    width:900px;
    height: 500px;
    border: 1px solid black;
    overflow: hidden;
    margin: auto;
    padding: 20px;
}
.dino { 
    position: absolute;
    bottom: 0;
    left: 50px; 
    width: 40px;
    height: 40px;
    background-color: black;
    background-image: url(images/trex.png);
    height: 94px;
    width: 94px;
}
.obstacle {
    position: absolute;
    bottom: 0;
    right: 0;
    background-image: url(images/1_Cactus_Chrome_Dino.webp.png);
    height: 77px;
    width : 77px;
}