*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 20px 0;
  background: #6589f9;
}
.heading {
  text-align: center;
  background: rgb(0, 15, 46);
  padding: 1rem;
  color: bisque;
}
.count-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 60%;
  margin: auto auto;
  padding: 2rem 0;
}
.attempts {
  font-size: 2rem;
  color: antiquewhite;
} 
.reset {
  font-size: 2rem;
  color: antiquewhite;
  cursor: pointer;
  border: 1px solid grey;
  padding: .5rem;
}
.reset:hover {
  transform: scale(1.2);
}
.time {
  font-size: 2rem;
  color: antiquewhite;
}
.grid {
  max-width: 750px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-evenly;
}

.card {
  position: relative;
  transition: all 0.4s linear;
  transform-style: preserve-3d;
  margin: 5px;
}

.card,
.back,
.front {
  height: 100px;
  width: 100px;
}

.back,
.front {
  position: absolute;
  backface-visibility: hidden;
}
.front {
  background: #fab942 url('../media/question.gif') no-repeat center center /
    contain;
}
.back {
  transform: rotateY(180deg);
  background-color: white;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center center;
}

.selected {
  border: 4px solid blue;
  transform: rotateY(180deg);
}

.match .front {
  border: 0px;
  background: rgb(4, 44, 2) url("../media/celebrate.gif") no-repeat center center /
  contain !important;
  cursor: not-allowed;
  transform: none !important;
}