*, *::before, *::after{
    box-sizing: border-box;
    user-select: none;
}

body{
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-image: url("assets/image/NW0mK39.gif");
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.world{
    overflow: hidden;
    position: relative;
    width: 100%;
height: 300px;
}

.score{
    position: absolute;
    font-size: 5vmin;
    right: 130vmin;
    top: 1vmin;
    color: orange;
}

body>div>a{
    position: absolute;
    font-size: 4vmin;
    right: 138vmin;
    top: 1vmin;
    color: red;
}

.start-screen{
    position: absolute;
    font-size: 5vmin;
    top: 50%;
    left: 50%;
    transform: translate(-50% -50%);
}

.hide{
    display: none;
}

.ground{
    --left:0;
    position: absolute;
    width: 1000%;
    height: 10%;
    bottom: 0;
    left: calc(var(--left)*1%);
}

.dino{
    --bottom:0;
    position: absolute;
    left: 1%;
    height: 30%;
    bottom: calc(var(--bottom)*1%);
}

.cactus{
    position: absolute;
    left: calc(var(--left)*1%);
    height: 30%;
    bottom: 0;
}