body {
background-image: repeating-linear-gradient(-45deg,
transparent,
transparent 20px,
black 20px,
black 40px);
width: 3px;
}
body{
background: repeating-linear-gradient(
to right bottom,
#C80A0A ,
#C80A0A 5%,
#880D0D 5%,
#880D0D 10%
);
}
/*
body{
background: repeating-linear-gradient(
to right bottom, select the direction (could be also in deg)
#C80A0A , color + start position
#C80A0A 5%, color + start position
#880D0D 5%, color ...
#880D0D 10% color ...
);
}
*/