p {
  background-color: aqua;
  border: 1px solid red;
  color: blue;
  padding: 20px 30x 40px 50px;
  margin: 30px;
}

div {
  width: 100px;
  height: 100px;
  background-color: rgba(0, 255, 0, 0.5);
  position: absolute;
  top: 0;
}
table {
  border-collapse: collapse;
  margin: 50px;
}
td {
  border: 3px solid red;
  font-size: 30px;
  padding: 20px;
}


td,th {
    padding: 20px;
    transition: .5s;
    width: 60px;
    text-align: center;

}
td:hover {
    background-color: gray;
}