body{
  height: 700px;
}
#game{
  width:700px;
  height:300px;
  border: 1px solid black;
  margin: auto;
  margin-top: 103px;
}

#fundo{
  width:700px;
  height:300px;
  margin-top: 0px;
  border: 1px solid black;
  position: absolute;
}

#character, img{
  width: 80px;
  height: 100px;
  position: relative;
  top: 103px; 
}


@keyframes jump{
  0%{top: 50px;}
  30%{top: 30px;}
  70%{top: 20px;}
  100%{top: 50px;}
}

.animate{
  animation: jump 250ms linear;
}

#block{
  width: 10px;
  height: 20px;
  background-color: black;
  position: relative;
  top: 180px;
  left: 690px;
  animation: block 1s infinite linear;
}

#cano {
  width: 40px;
  height: 50px;
  position: relative;
  top: -30px;
  left: -5px;
  position: absolute;
}

@keyframes block{
  0%{left: 700px}
  100%{left: 0px} 
}

#back{
  width: 80%;
  height: 400px;
  position: relative;
  margin-left: 10%;
  margin-right: 10%;
  margin-top: 0;
  margin-bottom: 5%;
}