<div class="Footer-section">
        <div class="triangle"></div>
        <h1>Thanks!</h1>
        <h2>Want to chat?</h2>
        <p>CompSciLauren@gmail.com</p>
        <p>Linkedin, Twitter, GitHub</p>
      </div>

.triangle {
  width: auto;
  height: 0;
  border-left: 50vw solid #21183c;
  border-right: 50vw solid #21183c;
  border-top: 80px solid #f1f5f8;
}

.Footer-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: calc(10px + 2vmin);
  color: #f3ebff;
  background-color: #21183c;
}