<div class="center">
  <div class="button">
    <span class="button__inner">
      Button Out.
    </span>
  </div>
</div>

body {
  background-color: black;
}

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

.button {
  background-color: transparent;
  cursor: pointer;
  display: inline-block;
  margin: 15px auto;
  white-space: nowrap;
  position: relative;

  &:hover {
    &:after,
    &:before {
      border-color: #727272;
    }

    .button__inner {
      border-left: 1px solid #727272;
      border-right: 1px solid #727272;

      &:after,
      &:before {
        background-image: repeating-linear-gradient(
          -45deg,
          #727272,
          #727272 1px,
          transparent 0,
          transparent 16px
        );
      }
    }
  }

  &:after,
  &:before {
    border-color: white;
    border-style: solid;
    content: "";

    display: block;
    height: 16px;
  }

  &:before {
    top: 0;
    right: 0;
    border-width: 1px 1px 0 0;
    margin-left: 16px;
  }

  &:after {
    bottom: 0;
    left: 0;
    border-width: 0 0 1px 1px;
    margin-right: 16px;
  }
}

.button__inner {
  display: block;
  padding: 0 35px;
  margin: -1px 0;

  font-family: "Roboto", sans-serif;
  font-size: 14px;
  text-align: center;
  text-transform: uppercase;
  line-height: 16px;

  background-color: transparent;
  border-left: 1px solid #fff;
  border-right: 1px solid #fff;
  color: #fff;

  &:after,
  &:before {
    border-style: solid;
    border-color: transparent;
    border-width: 0 0 16px 16px;
    content: "";
    position: absolute;

    background-size: 16px 24px;
    background-image: repeating-linear-gradient(
      -45deg,
      #fff,
      #fff 1px,
      transparent 0,
      transparent 16px
    );
  }

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

  &:after {
    bottom: 0;
    right: 0;
    transform: rotate(180deg);
  }
}