Image hover border animation.html

  <div class="image-container-block">
            <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/65984/photo-1413752567787-baa02dde3c65.jpg" alt="">
            <div class="inner-image-block">
                <div class="image-animate-border"></div>
            </div>
        </div>

<style> 

</style>


//IMAGE HOVER OVERLAY START
.image-container-block {
  display: inline-block;
  position: relative;

  &:hover {
    .inner-image-block:before,
    .image-animate-border:after {
      height: 100%;
    }

    .inner-image-block:after,
    .image-animate-border:before {

      width: 100%;
    }
  }

  img {
    display: block;
    max-width: 100%;
  }
}

.image-animate-border:before,
.inner-image-block:after {
  height: 1px;
  transition: width 0.75s ease;
  width: 0;
}

.image-animate-border:after,
.inner-image-block:before {
  height: 0;
  transition: height 0.75s ease;
  width: 1px;
}

.inner-image-block:before,
.inner-image-block:after,
.image-animate-border:before,
.image-animate-border:after {
  background-color: #fff;
  content: "";
  display: block;
  position: absolute;
}

.inner-image-block {
  width: 95%;
  height: 95%;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto;

  &:before {
    bottom: 0;
    left: 0;
  }

  &:after {
    bottom: 0;
    right: 0;
  }
}

.image-animate-border {
  position: relative;
  width: 100%;
  height: 100%;

  &:before {
    top: 0;
    left: 0;
  }

  &:after {
    top: 0;
    right: 0;
  }
}

//IMAGE HOVER OVERLAY END