<div id="boxes" class="boxes">
  <div class="box" style="background-position: 0 0"></div>
  <div class="box" style="background-position: -125px 0"></div>
  <div class="box" style="background-position: -250px 0"></div>
  <div class="box" style="background-position: -375px 0"></div>
  <div class="box" style="background-position: 0 -125px"></div>
  <div class="box" style="background-position: -125px -125px"></div>
  <div class="box" style="background-position: -250px -125px"></div>
  <div class="box" style="background-position: -375px -125px"></div>
  <div class="box" style="background-position: 0 -250px"></div>
  <div class="box" style="background-position: -125px -250px"></div>
  <div class="box" style="background-position: -250px -250px"></div>
  <div class="box" style="background-position: -375px -250px"></div>
  <div class="box" style="background-position: 0 -375px"></div>
  <div class="box" style="background-position: -125px -375px"></div>
  <div class="box" style="background-position: -250px -375px"></div>
  <div class="box" style="background-position: -375px -375px"></div>
</div>

*{
  box-sizing: border-box;
}

body{
  background-color: #ee84b9;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}

.boxes{
  width: 600px;
  height: 600px;
  top: 40px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  position: relative;
}

.box{
  background-color: #3e0858;
  background-image: url("https://media3.giphy.com/media/dZeZXsUsD7fd2JegxI/giphy.gif?cid=6c09b952dqbgqifnaf35f1aok0rnxkob2gvk2mska9072n0i&rid=giphy.gif&ct=s");
  background-repeat: no-repeat;
  background-size: 500px 500px;
  position: relative;
  height: 125px;
  width: 125px;
}

.box::after{
  content: "";
  background-color: #5a0b80;
  position: absolute;
  top: 8px;
  right: -15px;
  height: 100%;
  width: 15px;
  transform: skewY(45deg);
}

.box::before{
  content: "";
  background-color:#34064a;
  position: absolute;
  left: 8px;
  bottom: -15px;
  height: 15px;
  width: 100%;
  transform: skewX(45deg);
}