silverstripe-framework/admin/scss/_CMSSecurity.scss

.cms-security {
		
	h1 {
		margin: 45px 40px 5px 25px;
		font-size: 1.9em;
		line-height: 1.2;
		font-weight: bold;
	}
	
	.Content {
		margin: 0 50px 0 25px;
	}
	
	.Form {
		margin: 0 25px;
		
		.field {
			border: 0 none;
			@include box-shadow(none);
			margin: 0;
			padding: 0;
			
			label.left {
				float: none;
				width: auto;
			}
			.middleColumn {
				margin: 0;
			}
		}
		
		#Password {
			width: 300px;
			float: left;
		}
		
		#ForgotPassword {
			float: left;
			padding: 40px 0 0 10px;
		}
		
		#Remember {
			clear: both;
		}
		
		.Actions {
			padding: 20px 0 0 0;
			
			#doLogout {
				line-height: 28px;
				margin: 0 0 0 10px;
			}
		}
	}
}

.leftandmain-logindialog-dialog .ui-dialog-titlebar-close {
	display: none;
}

.leftandmain-logindialog-overlay {
	opacity: 0.8;
}