* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

html {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

/* container */
.container {
  width: 100%;
  padding: 2rem;
  max-width: 35rem;
  margin: 5rem auto 0;
  border-radius: 1rem;
  border: 1px solid #c8c8c8;
}

/* header */
.header {
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
}

.header img[alt="avatar"] {
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
}

.header h1 {
  color: #3f3f3f;
  font-size: 2rem;
}

/* social links */
.links {
  display: flex;
  flex-direction: row;
  gap: 1rem;
}

.links a img {
  width: 2.5rem;
  height: 2.5rem;
  color: #2c2c2c;
}

hr {
  margin: 1rem 0;
  border-top: 1px solid #c8c8c8;
}

/* introduction */
.intro p {
  margin: 1rem auto;
  font-size: 1.4rem;
}

.intro a {
  font-size: 1.2rem;
  color: blue;
}