h1
{
    color: red;
    text-align: center;
}
.souligner
{
    text-decoration: underline;
}
h2
{
    color: blue;
    text-align: right;
}
h3
{
    color: green;
    text-align: left;
}
h4
{
    color: blueviolet;
    text-align: center;
}
h5
{
    color: orange;
    text-align: left;
}
h6
{
    color: black;
    text-align: right;
    font-size: 30px;
}