* {
    border: 0;
    margin: 0;
}

span {
    border: 0;
    margin: 0;
    padding: 0;
}

#gamespace {
    margin-left: 262px;
    margin-right: 262px;
    margin-bottom: 20px;
    width: 1000px; 
    height: 400px; 
    border: 2px solid black;
    background-color: white;
}

#dino {
    width: 80px;
    height: 80px;
    position: relative;
    top: 300px;
    margin-left: 40px;
}
.animate {
    animation: jump 500ms infinite;
}

#block {
    width: 40px;
    height: 40px;
    background-color: blue;
    position: relative;
    top: 260px;
    left: 960px;
    animation: block 2s infinite linear;
}

@keyframes block {
    0%{left: 960px;}
    100%{left: 0px;}
}

@keyframes jump {
    0%{top: 300px;}
    30%{top: 200px;}
    70%{top: 200px;}
    100%{top: 300px;}
}