#greyRow {
margin: 0px;
margin-bottom: 0px;
margin-left: 0px;
margin-top: 0px;
padding: 0px;
height: 45px;
background-color: #9a9a9d;
}
#redRow {
margin: 0px;
margin-bottom: 0px;
margin-left: 0px;
margin-right: 0px;
padding: 0px;
height: 2px;
background-color: #99042e;
}
#sepRow {
margin: 0px;
margin-bottom: 0px;
margin-left: 0px;
margin-right: 0px;
padding: 0px;
height: 1px;
width: 90%; 
background-color: #9a9a9d;
}
<style>
details {
	background-color: grey;
	line-height: 1.4;
}
details details {
	margin-left: 1em;
}
</style>