#container{
    display: flex;
    align-items: center;
    justify-content:center;
    flex-wrap: wrap;
   
    margin: auto;
    
    
}

#canvas1,#canvas2,#canvas3,#canvas4{
    border: 3px solid black;
    position: relative;
    margin-top: 50px;
    height: 700px;
    width: 350px;
    margin-left: 10px;
    
}