h1
{
    text-align: center;
}
h2
{
    text-align: center;
}
div a
{
    margin: auto;
    margin-top: 5px;
    text-align: center;
    display: block;
    color: black;
    font-size: 30px;
    width: 60%;
    border: 3px solid black;
    padding: 10px;
    background-color: blue;
}
.spec
{
    background-color: red;
}