body 
{
    font-family:Verdana, Arial;
    background-color:rgb(207, 234, 250);
    background-image:url("background.png");
    background-position: top;
    background-repeat: no-repeat;
    background-size: cover;
}

a
{
    color:black;
}

a:hover
{
    color:red;
}

a.index
{
    padding:5px;
    color:black;
    text-decoration:none;
    border:2px solid black;
    border-radius: 10px 100px / 120px;
    display:inline-block;
}

a.index:hover
{
    background-color:rgb(154, 196, 220);
    color:black;
    text-decoration:none;
}