.header {
	background: var(--cor-branco);
	position: sticky;
	top: 0;
	z-index: 1000;
	padding: 0.8rem 0;
	box-shadow: 0 0 6px rgba(0,0,0,.6);
}

.header:before {
	content: "";
	height: 10px;
	background: url(../img/cores-borda.png) repeat-x 50% 0;
	position: absolute;
	bottom: -10px;
	left: 0;
	right: 0;
}

@media (min-width: 998px) {
	.header {
		position: relative;
		padding: 2rem 0;
		box-shadow: none;
	}
}