body {
    font-family: Roboto;
    font-weight: 400;
    color: #202020;
    margin:0px;
  }
  
  
  
  #board {
    margin-left: auto;
    margin-right: auto;
    border-collapse: collapse;
    box-sizing: border-box;
    outline: 1px lightgray solid;
    font-size: 0px;
    display: table;
    position: relative;
    border-radius: 0px;
    margin-top: 18px;
    width: auto;
  }
  
  tr, tbody {
    height: 50px;
    box-sizing: border-box;
    overflow: auto;
    width: 100%;
    padding: 0px;
    margin: 0px;
    border: 0px;
  }
  
  td{
    box-sizing: border-box;
    border: 1px solid gray;
    padding: 0px;
    margin: 0px;
    width: 50px;
    height:50px;
  }
  
  
  .block{
    box-sizing: border-box;
    display: block;
    padding: 0px;
    margin: 0px;
    background-size: 450px;
    transition: box-shadow 0.1s ease-in-out;
    border: 0px white solid;
    position: absolute;
    z-index: 500;
    width: 50px;
    height: 50px;
  
  }
  
  
  #puzzle
  {
    width: 50%;
    float:right;
    background: #EEF;
    height: 100vh;
    position: relative;
  }
  
  #pieces
  {
    width: 50%;
    float:left;
    height: 100vh;
    position: relative;
  }