h1 {
    color:blue;
    text-align:center;
}
body {
    background-color:rgb(239, 239, 239);
    font-size:130%;
}
#left {
    text-align:left;
}
#right {
    text-align:right;

}
#retind {
    float:center;
    background-color: lightgrey;
    width: 30px;
    padding: 5px;
    margin: 2px;
}
a {
    color:black;
    font-weight: bold;
}