.box {
  position: relative;
}
canvas {
  display: block;
  margin: 50px auto 20px;
  /* box-shadow: -2px -2px 2px #efefef, 5px 5px 5px #b9b9b9; */
  width: 435px;
  height: 435px;
  border: 3px solid rgb(165, 165, 165);
}
body {
  background-color: antiquewhite;
}

.btn-wrap {
  width: 450px;
  margin: auto;
  display: flex;
  justify-content: space-between;
}
.btn-wrap div {
  min-width: 60px;
  text-align: center;
  font-size: 18px;
  background-color: rgba(255, 125, 19, 0.87);
  padding: 12px 8px;
  border: 4px solid #000;
  border-radius: 10px;
  cursor: pointer;
}
.winner {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 50px;
  display: none;
  transition: 1.5s;
}
@keyframes win {

}