* {
    margin: 0;
    padding: 0;
}

html,
body {
    width: 100%;
    height: 100%;
    background-color: black;
}

.header {
    /* background-image: url(1.png);
    -webkit-background-size: cover;
    background-size: cover;
    background-position: center center; */
    background-color: black;
    height: 100%;
    width: 100%;
}