* {
    margin: 0;
    padding: 0;
    
}

.container_old {
    position: fixed;
    top: 50%;
    left: 50%;
    margin-top: -50px;
    margin-left: -150px;
  }

.container {
    width: 400px;
    margin-top: 150px;
    margin-left: calc(50% - 200px);
}

a {
    width: 300px;
    background-color: green;
    padding: 20px;
    border-radius: 10px;
    color:antiquewhite;
}

a.RC {
    width: 300px;
    background-color:  #d5320f ;
    padding: 20px;
    border-radius: 10px;
    color:black;
}
a:visited {
    color: antiquewhite;
}

.version {
    color: yellow;
    background-color: black;
    transform: translate(-50px, -25px) rotate(35deg);
    display: inline-block;
    padding: 5px;
    border-radius: 5px;
}