#table {
  display: flex;
  flex-wrap: wrap;
  margin: 0 4rem 85px;
}

@media (max-width: 768px) {
  #table {
    margin: 0 0 85px;
  }
}


.cards {
  width: calc(100% / 13);
}

.cards.disabled {
  opacity: 0.5;
}

.data-area {
  text-align: center;
  background-color: #ffffff85;
  display: flex;
  align-items: center;
  width: 100%;
  position: fixed;
  left: 0;
  bottom: 50px;
}

.btns {
  min-width: 500px;
  display: flex;
}
.btns button {
  border: none;
  outline: none;
  width: 50%;
  font-size: 1rem;
  padding: 20px 0;
}
.stop-btn {
  background-color: black;
  color: #ffffff;
}
.stop-btn:disabled {
  opacity: 0.5;
}

.home-btn {
  background: #c0c0c0;
}

.home-btn:hover {
  background-color: pink;
  transition: all .5s;
}


.btns button a {
  font-size: 1rem;
  color: #000;
  text-decoration: none;
}

.btns button a:hover {
  color: #fff;
  transition: all .6s;
}

.result {
  width: 20%;
  font-size: 50px;
}
.result.correct {
  color: blue;
}
.result.lose {
  color: red;
}
.num {
  width: 35%;
  font-size: 30px;
}
.hidden {
  visibility: hidden;
}
.clear-message {
  visibility: hidden;
  opacity: 0;
  width: 500px;
  max-width: 100%;
  padding: 20px;
  background-color: rgba(135, 207, 235);
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.3s;
}
.clear-message.show {
  visibility: visible;
  opacity: 1;
}

.copyright {
  width: 100%;
  background: brown;
  position: absolute;
  bottom: 0;
  right: 0;
  text-align: right;
  padding: 10px;
}

small {
  color: #fff;
}

@media screen and (max-width: 960px) {
  img {
    width: calc(100% / 9);
  }
}