body{
background-image:url('https://upload.wikimedia.org/wikipedia/commons/b/b4/Flag_of_Turkey.svg');
background-attachment:fixed;
background-repeat: repeat;
background-size: cover;
}

.logo {
    font-size: 0;
    background: url(https://upload.wikimedia.org/wikipedia/commons/b/b4/Flag_of_Turkey.svg) center;
    width: 890px;
    height: 50px;
    position: absolute;
    top: 0;
    left: 0;

}
#header {
    margin-bottom: 0;
    border: none;
    height: 50px;
    box-sizing: border-box;
    width: 100%;
    background: #000000;
    position: absolute;

}