<a href="" class="btn-skew">
  <div class="reset-skew">
    KNOW MORE
  </div>
</a>

body {
  background: gold;
}
.btn-skew {
  padding: 10px 25px;
  background: #000;
  transform: skew(15deg);
  border-radius:4px;
  display: inline-block;
  text-decoration: none;
}
.reset-skew {
  font-weight: bold;
  color: white;
  transform: skew(-15deg);
}