body{
    font-family:'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    background-image:url(gif/icey_background_4_2.gif);
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
}
#giris a{
    text-decoration: none;
    color: rgb(87, 87, 87);
    position: absolute;
    top: 68%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
    font-size: 24px;
    display: block;
    padding: 5px;
}
#giris a:hover{
    background-color: black;
    color: white;
}