* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  outline: none;
  user-select: none;
}
body {
  width: 100%;
  height: 100vh;
}

/* 
write by reza ramezani
github => ramezanidev
email => reza.dev@yahoo.com
tel => 09916223724
*/

.container {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: -moz-radial-gradient(
    50% 50%,
    circle cover,
    #808080 17%,
    #424242 91%
  );
  background: -webkit-radial-gradient(
    50% 50%,
    circle cover,
    #808080 17%,
    #424242 91%
  );
  background: -o-radial-gradient(
    50% 50%,
    circle cover,
    #808080 17%,
    #424242 91%
  );
  background: -ms-radial-gradient(
    50% 50%,
    circle cover,
    #808080 17%,
    #424242 91%
  );
  background: radial-gradient(50% 50%, circle cover, #808080 17%, #424242 91%);
}
.cover {
  width: 600px;
  height: 600px;
  border: 2px solid #000;
  box-sizing: content-box;
  border-radius: 4px;
  position: relative;
  padding: 10px;
}
.select {
  border: 3px solid #f00;
}
.Active {
  border: 1px solid #dedede;
}
.Delete {
  border: 3px solid #ff0202;
  background-color: b;
}
.block {
  width: 75px;
  height: 75px;
  padding: 5px;
  transition: 0.1s all ease-in-out;
}
.row {
  width: 100%;
  display: flex;
}
.row:nth-child(even) .block:nth-child(even) {
  background-color: #ce7009;
}
.row:nth-child(odd) .block:nth-child(odd) {
  background-color: #ce7009;
}
.row:nth-child(even) .block:nth-child(odd) {
  background-color: #2c0f00;
}
.row:nth-child(odd) .block:nth-child(even) {
  background-color: #2c0f00;
}
.block img {
  width: 100%;
  height: 100%;
}
.card {
  position: relative;
}
.Black_num,
.White_num {
  position: absolute;
  width: 100px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: fantasy;
  font-size: 22px;
  color: aliceblue;
  background-color: black;
  right: 10px;
}
.Black_num {
  top: -30px;
  right: 10px;
  border-radius: 75px 25px 0 0;
}
.White_num {
  left: 10px;
  bottom: -30px;
  border-radius: 0 0 75px 25px;
}