style.css

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

a {
  text-decoration: none;
}

body {
  background: #dedede;
  font-family: 'Roboto', sans-serif;
}

.container {
  text-align: center;
  width: 300px;
  margin: 1em auto;
}

img.avatar {
  width: 100%; 
  border-radius: 50%;
  width: 100px;
  height: 100px;
  padding: 3.7px;
  border: #42ebe8 solid 4px;
}

a img{
  width: 20px;
  margin-right: 0.5rem;
  height: 30px;
}

h1 {
  font-size: 32px;
  color: #00082F;
  margin-top: 24px;
  margin-bottom: 8px;
}

.username {
  font-family: 'Roboto Mono', monospace;
  font-weight: 400;
  color: #00082F;
  opacity: 0.8;
  font-size: 18px;
}

ul {
  list-style: none;
  margin: 48px 0;
}

ul li a {
  height: 53px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #223ca3; /* hex: 0 - F */
  color: white;
  font-size: 14px;

  margin-bottom: 16px;
  border-radius: 6px;

  transition: background 400ms;
}

ul li a:hover {
  background: #2bd9d6;
}

ul li #return:hover{
  background-color: #45db18;
}

ul li #return{
  background-color: #38a51f;
}

footer {
  font-weight: 500;
  font-size: 12px;
  color: #00082F;
  opacity: 0.6;
  transition: opacity 400ms;
}

footer:hover {
  opacity: 1;
}

footer a{
  color: #00082F;
  font-weight: 700;
}