body {
  background-color: #131519;
  color: white;
  font-family: monospace;
  text-align: center;
}

.intro,
#thebtns {
  display: flex;
  flex-wrap: wrap;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: absolute;
  top: 35%;
  left: 40%;
}

/* responsive starts*/

@media screen and (max-width: 500px) {
  .intro,
  #thebtns {
    font-size: 10px;
    left: 15%;
  }
  #thebtns {
    font-size: 20px;
    left: 10%;
  }
}

/* responsive ends */




#mainplaybtn {
  margin: 20px;
  padding: 10px;
  font-size: 40px;
  font-weight: bolder;
  color: white;
  background-color: white;
  animation: inc 1s linear infinite;
}
@keyframes inc {
  0% {
    font-size: 10px;
    background-color: #5077c4;
  }
  25% {
    font-size: 20px;
    background-color: #3d8f84;
  }
  50% {
    font-size: 30px;
    background-color: #4aaa42;
  }
  75% {
    font-size: 40px;
    background-color: #b4b647;
  }
  100% {
    font-size: 10px;
    background-color: #d84531;
  }
}

#mainplaybtn:hover {
  animation: none;
  background-color: rgba(255, 0, 0, 0.493);
}

.ModeBtn {
  display: flex;
  margin-top: 50px;
  justify-content: space-between;
}

#singleMode,
#MultiMode {
  width: 150px;
  height: 75px;
  margin-right: 20px;
  font-size: 20px;
  font-weight: 900;
  color: white;
  border-radius: 5%;
  background-color: rgb(190, 42, 42);
  cursor: pointer;
}

#singleMode a,
#MultiMode a {
  text-decoration: none;
  color: #131519;
}

#singleMode:hover,
#MultiMode:hover {
  background-color: gray;
}