header {
    background-color: #ff0000;
    color: #ffffff;
    padding: 8px;
}

nav {
    text-align: center;
}

nav a {
    margin: 50px;
    padding: 20px;
    text-decoration: none;
    color: #fff;
    font-size: 20px;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif
}

nav a:hover {
    background-color: #ff0000;
    color: #ffffff;
}
body {
    background-image: url("background.gif");
    background-size: cover;
  /*   background-position: top; */
    background-repeat: no-repeat;
}

#slogan-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40px;
    background-color:#ff0000;
    text-align: center;
    overflow: hidden;
}

#slogan-bar p {
    margin: 0;
    padding: 5px;
    color: rgb(255, 255, 255);
    font-size: 32px;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    animation: kayan-slogan 10s linear infinite;
}

@keyframes kayan-slogan {
    0% {
        transform: translateX(100%);
    }
    100% {
        transform: translateX(-100%);
    }
}

#retro-yazi {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    font-size: 10px;
    color: #fff;
    background-color: #ff00006d;
    padding: 10px;
    border-radius: 70px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}