<body>
  <div class="row">
    <div class="large-12 columns">
      <div class="wrapper">
        <div class="btn btn--border btn--primary btn--animated">View case study</div>
      </div>
    </div>
  </div>
</body>
body {
  position: relative;
  font-family: sans-serif;
  font-size: 14px;
}

.wrapper {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.btn {
  position: relative;
  display: inline-block;
  letter-spacing: 1.2px;
  padding: 12px 32px;
  text-align: center;
  text-transform: uppercase;
  overflow: hidden;
  z-index: 1;
  cursor: pointer;

  &:focus {
    outline: none;
  }
}

.btn--primary {
  color: lightslategray;
}

.btn--border {
  border-width: 1px;
  border-style: solid;
  border-radius: 10px;
  box-sizing: border-box;
}

.btn--animated {
  transition-property: color;
  transition-duration: 0.5s;

  &.btn--border.btn--primary {
    border: 1px solid lightslategray;
  }

  &:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: lightslategray;
    transform: scaleX(0);
    transform-origin: 0 50%;
    transition-property: transform;
    transition-duration: 0.5s;
    transition-timing-function: ease-out;
    z-index: -1;
  }

  &:hover {
    color: white;

    &:before {
      transform: scaleX(1);
      transition-timing-function: cubic-bezier(0.45, 1.64, 0.47, 0.66);
    }
  }
}
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