@import url("https://fonts.googleapis.com/css2?family=Fira+Code&family=Source+Sans+Pro&display=swap");

body {
  font-family: "Source Sans Pro", sans-serif;
  text-align: center;
  background: black;
  overflow-x: hidden;
  color: white;
}

header {
  text-align: center;
  padding-top: 25px;
  margin-bottom: 15px;
}

header h1 {
  font-family: "Fira Code", monospace;
  font-size: 2.4rem;
  margin-bottom: 12px;
}

header h1 span {
  display: inline-block;
  border-bottom: 1px solid #4dff67;
}

header h3 {
  margin-top: 5px;
}

header img {
  border-radius: 50%;
}

main p {
  margin: 0 auto 30px;
}

main ul {
  list-style: none;
  padding: 0;
}

.btn {
  width: 200px;
  margin: 0 auto 10px;
  border: 2px solid white;
  display: block;
  text-decoration: none;
  background: none;
  padding: 10px;
  color: #4dff67;
  font-size: 1.2rem;
}

.btn:hover {
  color: white;
  background: #4dff67;
  cursor: pointer;
}

.btn i {
  font-style: normal;
  margin-right: 10px;
}

h3.section-header {
  color: #4dff67;
}

@media only screen and (max-width: 900px) {
  body {
    overflow-y: auto;
    overflow-x: hidden;
    width: 100vw;
  }
  .btn {
    width: auto;
    padding: 20px 10px;
    margin-bottom: 20px;
  }
}