html {
    background: #0D1117 !important;
}

body {
    background: #0D1117 !important;
    margin: 0 !important;
    padding: 0 !important;
}

.l-wrapper {
    margin-top: 0 !important;
    padding-top: 0 !important;
}

.header {
    margin-top: 0 !important;
    padding-top: 0 !important;
}