sudsol.css

* {
  margin: 0;
  padding: 0; }

* {
  margin: 0;
  padding: 0; }

body {
  background-color: yellowgreen; }
  body div.container {
    margin: 8% auto 0;
    width: 500px;
    background-color: white;
    border: 1px solid black;
    -webkit-border-radius: 20px;
    -moz-border-radius: 20px;
    border-radius: 20px;
    -webkit-box-shadow: 1px 1px 5px 1px black;
    box-shadow: 1px 1px 5px 1px black; }
    body div.container h1 {
      text-align: center;
      font-weight: 300;
      font-family: Tahoma, Verdana; }
    body div.container hr {
      height: 1px;
      color: black;
      background-color: black;
      border-color: black; }
    body div.container div#grille {
      margin: 0 auto;
      width: 490px;
      padding: 5px; }
      body div.container div#grille div.box {
        display: inline-block;
        text-align: center;
        width: 50px; }
        body div.container div#grille div.box input {
          text-align: center;
          width: 50px;
          height: 30px;
          border: 0;
          font-family: "Comic sans MS";
          font-weight: 600;
          font-size: 18px; }
        body div.container div#grille div.box div.possib {
          font-size: 8px; }
        body div.container div#grille div.box div.green {
          background-color: limegreen; }
      body div.container div#grille div.cell1 input {
        background-color: lightskyblue; }