.references {
    display: block;
    width: 100%;
    clear: both;
    margin: 15px 0;
}
.box-ref {
    background: #fff;
    position: relative;
    height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
    margin: 20px auto 20px;
}
.references a {margin: 0 auto;}
.references img {
    flex-wrap: wrap;
    align-items: center;
    padding: 20px;
    max-width: 100%;
}

.references span {
    font-family: 'Lato', sans-serif;
    color: #838181;
    display: block;
}
.references span a {
    color: #282526;
    margin: 20px 0;
    text-align: center;
    width: 100%;
}
.references span a:hover {color:#0000fa}
.l1, .l2, .l3, .l4 {
  position: absolute;
  background: transparent;
  width: 0px;
  height: 0px;
  -webkit-animation-duration: .4s;
  -webkit-animation-iteration-count: 1;
  -webkit-animation-timing-function: ease-in-out;
  -webkit-animation-fill-mode: forwards;
}

.l1 {
  left: 0;
  bottom: 0;
  height: 235px;
  width: 3px;
  -webkit-animation-name: l1;
  -webkit-animation-delay: 0s;
}

.l2 {
  top: 0;
  left: 0;
  width: 300px;
  height: 3px;
  -webkit-animation-name: l2;
  -webkit-animation-delay: .4s;
}

.l3 {
  right: 0;
  top: 0;
  height: 235px;
  width: 3px;
  -webkit-animation-name: l3;
  -webkit-animation-delay: .8s;
}

.l4 {
  bottom: 0;
  right: 0;
  width: 300px;
  height: 3px;
  -webkit-animation-name: l4;
  -webkit-animation-delay: 1.2s;
}

@-webkit-keyframes l1 {
  0% {
    height: 0;
    background: #ebebeb;
  }
  100% {
    height: 100%;
    background: #ebebeb;
  }
}
@-webkit-keyframes l2 {
  0% {
    width: 0;
    background: #ebebeb;
  }
  100% {
    width: 100%;
    background: #ebebeb;
  }
}
@-webkit-keyframes l3 {
  0% {
    height: 0;
    background: #ebebeb;
  }
  100% {
    height: 100%;
    background: #ebebeb;
  }
}
@-webkit-keyframes l4 {
  0% {
    width: 0;
    background: #ebebeb;
  }
  100% {
    width: 100%;
    background: #ebebeb;
  }
}

@media only screen and (max-width:560px){
ul.references {display: block;}
.references li{width:100%;    margin: 10px 0;}
}