style.css

@import url('https://fonts.googleapis.com/css2?family=Dosis:wght@600&display=swap');
body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  background-color: #141d26;
}
.MainContainer {
  text-align: center;
  font-family: 'Dosis', sans-serif;
  background-color: #141d26;
  padding: 40px 0px;
}
.MainContainer h1 {
  color: whitesmoke;
  margin: 0px;
  margin-bottom: 20px;
  text-transform: uppercase;
  font-family: 'Dosis', sans-serif;
}
.searchSection input {
  padding: 15px 20px;
  width: 30%;
  border: none;
  border-radius: 3px;
}
.searchSection button {
  padding: 13px 30px;
  background-color: whitesmoke;
  border: none;
  color: #141d26;
  border-radius: 2px;
  border: 2px solid whitesmoke;
  cursor: pointer;
}
.searchSection button:hover {
  background-color: #141d26;
  border: none;
  color: whitesmoke;
  transition-duration: 500ms;
  border: 2px solid whitesmoke;
  border-radius: 2px;
}
.ProfileSection {
  color: whitesmoke;
  text-align: left;
  margin-top: 50px;
  width: 100%;
  padding: 20px 40px;
  display: flex;
  justify-content: center;
}
.ProfileSec1 {
  width: 400px;
  margin-right: 200px;
}
.ProfileSec1 h2 {
  display: inline-block;
  margin-right: 30px;
}
.ProfileSec1 a {
  color: whitesmoke;
  text-decoration: none;
  margin: 0px 5px;
  font-size: 18px;
}
.GithubBTN {
  color: white;
  padding: 10px 10px;
  border-radius: 3px;
  background-color: transparent;
  border: 2px solid white;
  cursor: pointer;
}
.GithubBTN:hover {
  background-color: whitesmoke;
  color: #141d26;
  transition-duration: 500ms;
}
.repoBTN {
  color: white;
  padding: 5px 8px;
  margin-right: 20px;
  border-radius: 3px;
  background-color: transparent;
  border: 2px solid white;
  cursor: pointer;
}
.repoBTN:hover {
  background-color: whitesmoke;
  color: #141d26;
  transition-duration: 500ms;
}
.ProfileSec2 {
  padding: 0px 10px;
  text-align: center;
}
.ProfileSec2 img {
  border-radius: 50%;
  height: 250px;
  width: 250px;
}
.repoList {
  margin-top: 30px;
}
.repoItem {
  border: 1px solid white;
  padding: 0px 20px;
  width: 200%;
  border-radius: 5px;
  margin: 10px 0px;
}
.repoItem h3 {
  display: inline-block;
  margin-right: 5px;
}
.GithubBTN2 {
  color: #141d26;
  padding: 5px 20px;
  margin-left: 20px;
  border-radius: 3px;
  background-color: whitesmoke;
  border: 2px solid white;
  font-size: 10px;
  cursor: pointer;
  font-weight: bold;
  font-size: 16px;
}

@media screen and (max-width: 480px) {
  .searchSection input {
    width: auto;
  }
  .ProfileSection {
    flex-direction: column;
    padding: 30px;
    width: 300px;
  }
  .ProfileSec1 {
    width: 300px;
  }
  .repoItem {
    width: auto;
  }
}