karathan-blog/themes/stellar/assets/sass/layout/_header.scss

///
/// Stellar by HTML5 UP
/// html5up.net | @ajlkn
/// Free for personal and commercial use under the CCA 3.0 license (html5up.net/license)
///

/* Header */

	#header {
		@include padding(5em, 5em, (0, 0, -2em, 0));
		text-align: center;

		h1 {
			margin: 0 0 (_size(element-margin) * 0.125) 0;
		}

		p {
			font-size: 1.25em;
			letter-spacing: _font(letter-spacing);
		}

		&.alt {
			@include padding(6em, 5em, (1em, 0, 0, 0));

			h1 {
				font-size: 3.25em;
			}

			> * {
				@include vendor('transition', 'opacity 3s ease');
				@include vendor('transition-delay', '0.5s');
				opacity: 1;
			}

			.logo {
				@include vendor('transition', (
					'opacity 1.25s ease',
					'transform 0.5s ease'
				));
				@include vendor('transition-delay', '0s');
				display: block;
				margin: 0 0 (_size(element-margin) * 0.75) 0;

				img {
					display: block;
					margin: 0 auto;
					max-width: 75%;
				}
			}
		}

		@include breakpoint('<=large') {
			@include padding(4em, 4em, (0, 0, -2em, 0));

			&.alt {
				@include padding(5em, 4em, (1em, 0, 0, 0));
			}
		}

		@include breakpoint('<=medium') {
			@include padding(4em, 3em, (0, 0, -2em, 0));

			&.alt {
				@include padding(4em, 3em, (1em, 0, 0, 0));
			}
		}

		@include breakpoint('<=small') {
			@include padding(3em, 2em, (0, 0, -1em, 0));

			p {
				font-size: 1em;
				letter-spacing: 0;

				br {
					display: none;
				}
			}

			&.alt {
				@include padding(3em, 2em, (1em, 0, 0, 0));

				h1 {
					font-size: 2.5em;
				}
			}
		}

		@include breakpoint('<=xsmall') {
			@include padding(3em, 1.5em, (0, 0, -1em, 0));

			&.alt {
				@include padding(3em, 1.5em, (1em, 0, 0, 0));
			}
		}

		@include breakpoint('<=xxsmall') {
			@include padding(2.5em, 1em, (0, 0, -1em, 0));

			&.alt {
				@include padding(2.5em, 1em, (1em, 0, 0, 0));
			}
		}

		body.is-preload & {
			&.alt {
				> * {
					opacity: 0;
				}

				.logo {
					@include vendor('transform', 'scale(0.8) rotate(-30deg)');
				}
			}
		}
	}