main.css

html * { box-sizing: border-box; }
body { margin: 0; }
.main-container{ 
	font-family: arial;
	display: flex;
	flex-flow: row wrap;
	/*background-image: url("./xmas-bg.jpg");
	background-size: cover;
	background-attachment: fixed;
	background-repeat: no-repeat;
	background-position: right;*/
	padding: 10px;
}
.main-container:before{
	content: "";
	display: block;
	position: fixed;
	left: 0;
	top: 0;
	width: 100%;
	height: 100vh;
	z-index: -10;
	background: url("./xmas-bg.jpg");
	background-repeat: no-repeat;
	background-position: right;
	-webkit-background-size: cover;
	-moz-background-size: cover;
	-o-background-size: cover;
	background-size: cover;
}
.member{ 
	margin: 0 10px 10px 0;
	padding: 10px;
	background: rgba(0,0,0,0.7);
	border-radius: 15px;
	margin-bottom: 20px;
}
.member.full{
	flex-basis: 95%;
}
.member.full span {
	background: none;
}
.member .header { font-size: 20px; text-align: center; margin-bottom: 10px; color: white; }
.member span { 
	display: block;
	background: rgba(211,211,211,0.5);
	color: white;
	margin-bottom: 10px;
	padding: 3px;
	border-radius: 7px;
}