body
{
    background-color: hotpink;
}

h2, h3
{
    color: white;
}

.special_color
{
    color: teal;
    font-weight: bold;
}

.white_rond > li::marker
{
    color: white;
}

.white_rond ul
{
    padding-left: 0px;
}

a
{
    text-decoration: none;
}

a:hover
{
    color: red;
}

a:active
{
    color: white;
}

a:visited
{
    color: black;
}

.xbutton
{
    position: absolute;
    top: calc(10% + 50px);
    right: 50px;
    width: 100px;
    height: 100px;
    background-color: lightgray;
    color: black;
    border: outset 10px gray;
    box-sizing: border-box;
    text-align: center;
}

.xbutton:hover
{
    border: inset 10px gray;
}