style.css

@media only screen and (max-width: 500px) {
  .repos-container .get-repos {
    justify-content: center;
  }
  .repos-container .get-repos input {
    font-size: 1.4rem !important;
  }
  .repos-container .get-repos .get-button {
    margin-top: 1rem;
  }
  .repo-stars{
    margin-top: 10px;
  }
}
* {
  box-sizing: border-box;
}
body {
  font-family: Tahoma, Arial;
}
main {
  max-width: 1200px;
  margin: auto;
}
.repos-container {
  background-color: #f6f6f6;
}
.repos-container .get-repos {
  padding: 20px;
  display: flex;
  flex-wrap: wrap;
  background-color: #eee;
}
.repos-container .get-repos input {
  flex: 1;
  padding: 15px 20px;
  border: none;
  font-size: 1.7rem;
}
.repos-container .get-repos input:focus {
  outline: 2px solid #3b5998;
}
.repos-container .get-repos .get-button {
  width: 140px;
  margin-left: 10px;
  background-color: #3b5998;
  color: #fff;
  line-height: 54px;
  text-align: center;
  font-weight: bold;
  cursor: pointer;
  border: 0;
}
.repos-container .show-data {
  padding: 20px;
  background-color: #e0e0e0;
  font-family: 'Roboto', sans-serif;
}
.repo-box{
  background-color: #fff;
  padding:1rem;
  margin:1rem 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}
.repo-name{
  flex-basis: 300px;
}
.option-buttons{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
}
.option-buttons > *{
  padding: 8px 33px;
  color: white;
}
.repo-link{
  text-decoration: none;
  background-color:#4a4e4d;
}
.repo-link:hover{
  background-color: #16a085;
  transition: 1s;
  transform: scale(1.1);
}
.repo-stars{
  background-color: #0e9aa7;
}
.repo-forks{
  background-color:#4d648d ;
}