oficinasuport-wp-theme/sass/layouts/_no-sidebar.scss

@media screen {
	.no-sidebar {
		.site {
			display: grid;
			grid-template-columns: auto;
			grid-template-areas:
			"header"
			"main"
			"footer";
			margin: auto;
			padding: 0 1rem;
			max-width: 80em;
		}
		.site-header {
			position: sticky;
			z-index: 900;
      top: 0;
			height: 10rem;
			margin-bottom: 2rem;
			background-color: hsla(0, 0%, 100%, 0.95);
			&::after {
				content: "";
				display: inline-block;
				width: 100%;
				height: 5rem;
				position: absolute;
				top:10rem;
			  // https://css-tricks.com/easing-linear-gradients/
			  background-image: linear-gradient(
          hsla(0, 0%, 100%, 0.95) 5%,
          hsla(0, 0%, 100%, 0.738) 19%,
          hsla(0, 0%, 100%, 0.541) 34%,
          hsla(0, 0%, 100%, 0.382) 47%,
          hsla(0, 0%, 100%, 0.278) 56.5%,
          hsla(0, 0%, 100%, 0.194) 65%,
          hsla(0, 0%, 100%, 0.126) 73%,
          hsla(0, 0%, 100%, 0.075) 80.2%,
          hsla(0, 0%, 100%, 0.042) 86.1%,
          hsla(0, 0%, 100%, 0.021) 91%,
          hsla(0, 0%, 100%, 0.008) 95.2%,
          hsla(0, 0%, 100%, 0.002) 98.2%,
          hsla(0, 0%, 100%, 0) 100%
        ); 
		  }
			.main {
				display: flex;
				flex-flow: row;
				align-items: center;
				justify-content: space-around;
			}
			.secondary {
				display: flex;
				flex-flow: column;
				align-items: center;
			}
		}
		.site-main {
			h1,h2,h3,h4,h5,h6,.entry-content {
				margin:0;
			}
		}
	}
}
@media screen and (min-width: 48em) {
	.no-sidebar {
		.site {
			padding: 0 2rem;
		}
		.site-header {
			.main {
				flex-flow: column;
				border-bottom: 1px solid $color__grey-lighter;
			}
			.secondary {
				//justify-content: center;
			}
		}
	}
}
@media screen and (min-width: 80em) {
	.no-sidebar {
		.site {
			padding: 0 3rem;
		}
		.site-header {
			.main {
				flex-flow: row;
				align-items: center;
				justify-content: space-between;
			}
			.secondary {
			}
		}
	}
}