#universe {
  border-collapse: collapse;
  margin: auto;
}
  
#universe td {
  border: 1px solid LightGrey;
  width: 12px;
  height: 12px;
}
  
#universe .life {
  background-color: black;
}
  
#buttons {
  text-align:center; 
  width: 100%;
}
  
div {
  margin: 2%;
}
  
#menu {
  width: 16%;
  float: left;
}
  
#gof {
  width: 76%;
  float: right;
}
  
input {
  margin: 7px;
  width: 100px;
  height: 30px;
}
  
hr {
  margin: 50px;
}