*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    
    }
    
    .game-board {
    width: 100%;
    height: 928px;
    border-bottom: 15px solid (35, 160, 35);
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    background: linear-gradient(#87ceeb , #E0F6FF );
    
    }
    
    .pipe{
    
    position: absolute;
    bottom: 0;
    width: 80px;
    animation: pipe-animation 1.5s infinite linear;
    
    
    }
    
    .mario{
    width: 150px;
    position: absolute;
    bottom: 0;
    
    }
    
    .jump{
    
    animation: jump 500ms ease-out;
    
    }
    
    .clouds{
    position: absolute;
    width: 550px;
    animation: clouds-animation 20s infinite linear;
    }
    
    
    
    @keyframes pipe-animation{
    
    from{
    right: -80px;
    
    
    }
    
    to {
    
    right: 100%;
    
    
    }
    
    
    
    }
    
    
    @keyframes jump {
    
    0% {
    
    bottom: 0;
    
    }
    
    40% {
    
        bottom: 180px;
        
    }
    
    50% {
    
    
    bottom: 180px;
    
    }
    
    60% {
    
        bottom: 180px;
        
     }
    
    100% {
    
    bottom: 0;
    
    }
    
    
    
    }
    
    
    @keyframes clouds-animation {
    
    from {
    
    right: -550px;
    
    }
    
    to {
    
    right: 100%;
    
    }
    
    
    }