Hello, CSS3
This week I'm all about embracing new-ish web standards. In a prior post, I marked up an HTML5 "Hello, World!" document using new semantic tags. Today I'm going to apply some CSS2 and CSS3 styles to that document to demonstrate the awesome new design features that are available in CSS3.
First, let's start by checking out how the HTML5 "Hello, World!" document renders without any styling applied:
No surprises in the screenshot above. The document gets rendered with just a bit of formatting for headers, lists & links. Let's add some CSS2 styles to spruce things up a bit.
article,aside,figure,footer,header,hgroup,nav,section {
/* setup for browsers that don't yet recognize HTML5
block elements */
display:block
}
p {
/* add a bit of margin above and
below all paragraphs */
margin: 0.5em 0em;
}
html {
/* stretch body to fill extra browser height */
height: 98%;
/* define color for dead space on
left and right of page body */
background-color: #D0D3A6;
}
body {
/* stretch body to fill extra browser height */
min-height: 98%;
/* define content width */
width:46em;
/* center content in the browser window */
margin: 0 auto;
/* background color for body content */
background-color: #FFFFFF;
/* and a wee bit of padding for all
top-level elements in the body */
padding: 0.5em 1.5em;
}
body > header {
/* keep the header from being crowded */
margin-bottom: 0.25em;
}
body > header > hgroup {
/* style the page's header */
padding: 0.25em;
margin-bottom: 0.5em;
background-color: #BC9C73;
text-align: center;
}
body > header > nav {
/* style the page's navigation content */
background-color: #486997;
/* define bottom border to force render of
child ul's bottom margin */
border-bottom: 0.1em solid #486997;
}
body > header > nav a {
/* style the page's navigation content */
color: #FFFFFF;
text-decoration: none;
}
body > header > nav ul {
/* style the page's navigation content */
background-color: #688AB6;
margin: 0em 0em 0.3em 0em;
padding: 1em 0.75em 0em 0.75em;
}
body > header > nav ul li {
/* style the page's navigation content */
background-color: #486997;
padding: 0.3em 1em;
margin: 0em 0.15em;
display: inline;
}
body > footer {
/* render the footer in the center, below
all other content */
text-align: center;
clear: both;
}
h1 {
text-transform: capitalize;
}
h1,h2 {
font-size:medium;
margin: 0.5em 0em 0.25em 0em;
}
div#main {
/* float main content to the left */
float: left;
width: 74%;
}
div#sidebar {
/* float sidebar content to the right */
float: right;
width: 24%;
}
body aside,
body section {
/* keep content containers from feeling crowded */
padding: 0.25em;
margin: 0.25em 0em;
}
Well, that's certainly an improvement. But we can do even better by progressively enhancing the page with some additional CSS3 rules. Let's give the page some depth and texture.
/* many of these rules generated with
the awesome http://css3generator.com/ or
http://www.colorzilla.com/gradient-editor/ tools */
body {
/* round the corners of the body element's border */
-moz-border-radius: 4px;
border-radius: 4px;
/* apply inset box shadow to body element to
create the illusion of depth */
-webkit-box-shadow: inset 2px 0px 25px #333333;
-moz-box-shadow: inset 2px 0px 25px #333333;
box-shadow: inset 2px 0px 25px #333333;
}
h1, h2 {
/* apply drop shadow to header text */
text-shadow: 1px 1px 2px #333333;
filter: dropshadow(color=#333333, offx=1, offy=1);
}
body > header * {
/* by default, round the border corners of
all elements in the header */
-moz-border-radius: 4px;
border-radius: 4px;
}
body > header > hgroup,
body > header > nav {
/* apply box shadows to top-level header containers
to create the illusion of depth */
-webkit-box-shadow: 2px 4px 6px #333333;
-moz-box-shadow: 2px 4px 6px #333333;
box-shadow: 2px 4px 6px #333333;
}
body > header > hgroup {
/* add a subtle gradient to header's background */
background: -moz-linear-gradient(top, #BC9C73 0%, #D3BFA5 100%); /* firefox */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#BC9C73), color-stop(100%,#D3BFA5)); /* webkit */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#BC9C73', endColorstr='#D3BFA5',GradientType=0 ); /* ie */
}
body > header > nav ul {
/* "square" the dividing line between navigation
tabs and their background */
-moz-border-radius-bottomright: 0px;
-moz-border-radius-bottomleft: 0px;
border-bottom-right-radius: 0px;
border-bottom-left-radius: 0px;
}
body > header > nav ul li {
/* round the top corners of the navigation links */
-moz-border-radius-topleft: 10px;
-moz-border-radius-topright: 10px;
-moz-border-radius-bottomright: 0px;
-moz-border-radius-bottomleft: 0px;
border-top-left-radius: 10px;
border-top-right-radius: 10px;
border-bottom-right-radius: 0px;
border-bottom-left-radius: 0px;
/* add a gradient to the background of our
navigation links */
background: -moz-linear-gradient(top, #c3d9ff 0%, #486997 37%, #486997 100%); /* firefox */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#c3d9ff), color-stop(37%,#486997), color-stop(100%,#486997)); /* webkit */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#c3d9ff', endColorstr='#486997',GradientType=0 ); /* ie */
/* apply a more drop shadow to navigation link text */
text-shadow: 1px 2px 8px #ffffff;
filter: dropshadow(color=#ffffff, offx=1, offy=2);
}
body section,
body aside {
/* round the corners of top-level semantic elements */
-moz-border-radius: 4px;
border-radius: 4px;
/* apply a gradient background "smear"
to top-level semantic elements */
background: #FFFFFF; /* use white background if gradient not available*/
background: -moz-linear-gradient(top, #D3BFA5 0%, #FFFFFF 33%); /* firefox */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#D3BFA5), color-stop(33%,#FFFFFF)); /* webkit */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#D3BFA5', endColorstr='#FFFFFF',GradientType=0 ); /* ie */
}
Many of the CSS3 rules used above were generated with the awesome CSS3 Generator and ColorZilla Gradient Generator tools. I highly recommend checking them out!
