.selectImg img{
  border: 1px solid #5f5859;
}

.selectImg li {
  position: relative;
  list-style: none;
  margin: 10px;
  width: 173px;
  height: 57px;
  float: left;
}

.selectImg li:before {
  content: "\2714";
  display: block;
  position: absolute;
  margin: auto;
  bottom: 0; right: 0;
  width: 40px;
  height: 40px;
  line-height: 40px;
  background:  #00c09e;
  border-radius: 50px;
  color: #fff;
  text-align: center;
  font-size: 16px;
  z-index: 10;
  opacity: 0;
  transition:         0.3s linear;
  -o-transition:      0.3s linear;
  -ms-transition:     0.3s linear;
  -moz-transition:    0.3s linear;
  -webkit-transition: 0.3s linear;
  -o-user-select:      none;
  -moz-user-select:    none;
  -webkit-user-select: none;
  cursor: pointer;
}

.selectImg li.selected:before {
  opacity: 1;
}

/* img selection */

.selectImg li.selected img {
  box-shadow: 0 0 0 4px #00c09e;
  animation:        selected 0.3s cubic-bezier(0.250, 0.100, 0.250, 1.000);
  -o-animation:     selected 0.3s cubic-bezier(0.250, 0.100, 0.250, 1.000);
  -ms-animation:    selected 0.3s cubic-bezier(0.250, 0.100, 0.250, 1.000);
  -moz-animation:   selected 0.3s cubic-bezier(0.250, 0.100, 0.250, 1.000);
  -webkit-animation: selected 0.3s cubic-bezier(0.250, 0.100, 0.250, 1.000);
}