<div class="content-item">

  <div class="overlay"></div>

  <div class="corner-overlay-content">Info</div>

  <div class="overlay-content">
    <h2>Image Ink Logo</h2>
    <p>Logo for a screen printing company. They wanted a detachable/recognizable brand that didn't need the name of the company.</p>
  </div>

</div>

@import "compass/css3";

$yellow: #e8c63d;

p {
  margin: 0;
  padding: 0;
}

.content-item {
  background: url(https://dribbble.s3.amazonaws.com/users/21389/screenshots/537633/image_ink_logo.png);
  @include backface-visibility(hidden);
  height: 300px;
  margin: 20px auto;
  overflow: hidden;
  position: relative;
  width: 400px;
  .overlay {
    border-bottom: 100px solid $yellow;
    border-left: 100px solid transparent;
    bottom: 0;
    height: 0;
    opacity: 0.95;
    position: absolute;
    right: 0;
    text-indent: -9999px;
    @include transition(all 0.5s ease-out);
    width: 0;
  }
  &:hover .overlay {
    border-bottom: 800px solid $yellow; //size must be double container
    border-left: 800px solid transparent; //size must be double container
    @include transition(all 0.5s ease-out);
  }
  .corner-overlay-content {
    bottom: 15px;
    color: #333;
    position: absolute;
    right: 15px;
    @include transition(all 0.5s ease-out);
  }
  &:hover .corner-overlay-content {
    opacity: 0;
    @include transition(all 0.5s ease-out);
  }
  .overlay-content {
    bottom: 0;
    color: #333;
    left: 0;
    opacity: 0;
    padding: 30px;
    position: absolute;
    right: 0;
    top: 0;
    @include transition(all 0.3s ease-out);
    h2 {
      border-bottom: 1px solid #333;
      padding: 0 0 12px;
    }
  }
  &:hover .overlay-content {
    opacity: 1;
    @include transition(all 0.3s ease-out);
    @include transition-delay(0.3s);
  }
}

body {
  display: grid;
  height: 100vh;
  margin: 0;
  place-items: center;
}