* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
.banner-img {
  width: 270px;
  height: auto;
  margin-top: 100px;
}

.intro h3 {
  font-size: 40px;
}

.intro p {
  margin-top: 20px;
  font-size: 25px;
}
.intro ul li {
  font-size: 25px;
  list-style-type: "✔";
  margin-top: 12px;
}
.certify {
  width: 800px;
}
.third-text p {
  font-size: 25px;
  justify-content: center;
}
.third-text img {
  padding: 10px;
}
.review p {
  font-size: 20px;
}
.benefits p {
  margin-top: 10px;
}
.footer-links a:hover {
  text-decoration: underline !important;
}
#menu ul li a {
  color: white;
}