style.css

@import url('https://fonts.googleapis.com/css2?family=Lobster&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Alata&display=swap');
*{
    margin: 0;
    padding:0;
}
body{
    /*background-color: red;*/
    overflow: hidden;
}
.gameContainer{
    background-image:linear-gradient(rgba(0,0,0,0.2),rgba(0,0,0,0.2)), url(nhome.jpg);
    background-repeat: no-repeat;
    text-shadow: 2px 2px cyan;
    color: red;
    letter-spacing: 2px;
    word-spacing: 3px;
    background-size: 100vw 100vh;
    width: 100%;
    height: 100vh;
}
.gameOvery{
	visibility: hidden;
	text-align: center;
	font-family: 'Alata', sans-serif;
	background-color: black;
	margin-top: 15vw;
	font-size: 3rem;
	/*box-shadow: 5px 5px 5px 5px red;*/
	/*text-shadow: 2px 2px 5px red;*/
	width: 50vw;
	border-radius: 10px;
	border:5px dotted brown;
	position: absolute;
	margin-left: 320px;
	color: transparent;
	padding: 15px 30px;
}

.ninja{
    background-image: url(hattory.png);
    background-repeat: no-repeat;
    background-size: 100% 100%;
    width: 250px;
    height: 215px;
    position: absolute;
    /*bottom:0;*/
    margin-top: 29vw;
    left: 52px;
}

.obstacle{
    width: 150px;
    height: 115px;
    background-image: url(kiyo.png);
    background-size: 100% 100%;
    position: absolute;
    /*bottom: 0;*/
    margin-top: 35vw;
    left: 99vw;
}

.animateDino{
    animation: dino 0.6s ease-out;
}

.obstacleAni{
    animation: obstacleAni 5s linear infinite;
}

.gameOver{
    position: relative;
    background-color: black;
    top:20px;
    margin: auto;
    opacity: 0.8;
    width:55vw;
    border-radius: 9px;
    border:3px solid white;
    padding: 15px 10px; 
    font-size: 40px;
    text-align: center; 
    /*font-family: 'Ubuntu', sans-serif;*/
    /*font-family: 'Londrina Solid', cursive;*/
    font-family: 'Lobster', cursive;
}

#scoreCont{
    font-size: 25px;
    color: #54212f;
    font-weight: bold;
    position: absolute;
    margin: 25PX 535PX;
    border: 2px solid black;
    background-color: white;
    opacity: 0.6;
    padding: 10px;
    font-family: 'Ubuntu', sans-serif;
    border-radius: 10px;
}

@keyframes dino{
    0%{
        bottom: 0;
    }
    50%{
        bottom: 422px;
    }
    60%{
    	bottom: 422px;
    }
    100%{
        bottom: 0; 
    }
}

@keyframes obstacleAni{
    0%{
        left: 100vw;
    }
    100%{
        left: -10vw;
    }
}