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CSS States
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/* CSS States */ | |
body { | |
background: url(http://dabblet.com/img/noise.png); | |
background-color: #F5F2F0; | |
font-family: Georgia, serif; | |
font-size: 18px; | |
line-height: 1.6em; | |
text-shadow: 0 2px 0 white; | |
color: #222; | |
} | |
.wrapper { | |
width: 900px; | |
margin: 70px auto; | |
} | |
h1 { | |
font-family: Helvetica, Arial, sans-serif; | |
text-align: center; | |
font-size: 1.6em; | |
} | |
a { | |
text-decoration: none; | |
color: #B46919; | |
} | |
a:visited { | |
color: #834B0F; | |
} | |
a:hover { | |
color: #E9A051; | |
} | |
.device { | |
display: inline-block; | |
position: relative; | |
background:#AD0F0F; | |
width: 230px; | |
height: 450px; | |
padding: 20px 15px; | |
margin: 20px; | |
border-radius: 20px; | |
border: 1px solid #410707; | |
border-bottom-width: 8px; | |
box-shadow: 0 2px 5px rgba(0,0,0,0.7), | |
inset 0 0 10px rgba(255,255,255,0.5), | |
inset 0 2px 2px rgba(255,255,255,0.25); | |
} | |
section { | |
display: inline-block; | |
vertical-align: top; | |
padding: 30px; | |
width: 500px; | |
} | |
small { | |
display: block; | |
margin-top: 20px; | |
opacity: 0.3; | |
text-align: center; | |
padding: | |
20px; | |
transition: opacity 0.5s; | |
} | |
small:hover { | |
opacity: 1; | |
} | |
.up, .down, .left, .right { | |
position: absolute; | |
z-index: 1001; | |
margin-left: 50%; | |
font-size: 40px; | |
width: 50px; | |
height: 50px; | |
background: #FFA03A; | |
border: 1px solid #915515; | |
box-shadow: 0 3px 0 #52300E, | |
inset 0 0 10px rgba(255,255,255,0.3); | |
appearance: none; | |
border-radius: 50px; | |
cursor: pointer; | |
} | |
.up:active, .down:active, .left:active, .right:active { | |
margin-top: 3px; | |
box-shadow: inset 0 1px 1px rgba(0,0,0,0.3); | |
} | |
.up:before, .down:before, .left:before, .right:before { | |
display: block; | |
position: absolute; | |
content: ""; | |
width: 15px; | |
height: 15px; | |
border-radius: 15px; | |
background: #E4923D; | |
box-shadow: 0 2px 2px rgba(255,255,255,0.25), | |
inset 0 1px 0 rgba(0,0,0,0.5); | |
} | |
.up:after, .down:after, .left:after, .right:after { | |
display: block; | |
position: absolute; | |
content: ""; | |
top: -5px; | |
left: -6px; | |
width: 60px; | |
height: 60px; | |
border-radius: 60px; | |
box-shadow: 0 2px 2px rgba(255,255,255,0.25), | |
inset 0 2px 2px rgba(0,0,0,0.5); | |
} | |
.up:active:after, .down:active:after, .left:active:after, .right:active:after { | |
top: -8px; | |
} | |
.up { | |
top: 300px; | |
left: -25px; | |
} | |
.up:before { | |
top: 5px; | |
left: 17px; | |
} | |
.down { | |
top: 400px; | |
left: -25px; | |
} | |
.down:before { | |
bottom: 5px; | |
left: 17px; | |
} | |
.left { | |
top: 350px; | |
left: -75px; | |
} | |
.left:before { | |
top: 17px; | |
left: 5px; | |
} | |
.right { | |
top: 350px; | |
left: 25px; | |
} | |
.right:before { | |
top: 17px; | |
right: 5px; | |
} | |
.up:active ~ .screen .char, .down:active ~ .screen .char, .left:active ~ .screen .char, .right:active ~ .screen .char { | |
transition: margin-top 2s linear, | |
margin-left 2s linear; | |
} | |
.up:active ~ .screen .char { | |
margin-top: -84px; | |
background-position: 0 -144px; | |
animation: walk-up 0.65s infinite; | |
} | |
.down:active ~ .screen .char { | |
margin-top: 90px; | |
background-position: 0 0; | |
animation: walk-down 0.65s infinite; | |
} | |
.left:active ~ .screen .char { | |
margin-left: -88px; | |
background-position: 0 -48px; | |
animation: walk-left 0.65s infinite; | |
} | |
.right:active ~ .screen .char { | |
margin-left: 88px; | |
background-position: 0 -96px; | |
animation: walk-right 0.65s infinite; | |
} | |
.screen { | |
position: relative; | |
margin: 0 auto; | |
padding: 128px 112px; | |
box-sizing: border-box; | |
width: 224px; | |
height: 256px; | |
overflow:hidden; | |
box-shadow: 0 0 20px rgba(255,255,255,0.25), | |
0 2px 1px rgba(255,255,255,0.15); | |
background: url("http://joelb.me/extassets/sprites/home-layer-1.png") no-repeat; | |
} | |
.overlay { | |
position: absolute; | |
width: 100%; | |
height: 100%; | |
top: 0; | |
left: 0; | |
background: url("http://joelb.me/extassets/sprites/home-layer-2.png") no-repeat; | |
box-shadow: inset 0 0 50px rgba(0,0,0,0.5); | |
z-index: 1000; | |
} | |
.char { | |
position: relative; | |
left: -16px; | |
background-image: url("http://joelb.me/extassets/sprites/old-man.png"); | |
background-position: -32px 0; | |
width: 32px; | |
height: 48px; | |
transition-property: margin-top, margin-left, background-position; | |
transition-duration: 0; | |
transition-delay: 999999s; | |
transition-timing-function: linear; | |
} | |
@keyframes walk-up { | |
0%, 32.99% { background-position: 0 -144px; } | |
33%, 65.99% { background-position: 32px -144px; } | |
66%, 100% { background-position: -32px -144px; } | |
} | |
@keyframes walk-down { | |
0%, 32.99% { background-position: 0 0; } | |
33%, 65.99% { background-position: 32px 0; } | |
66%, 100% { background-position: -32px 0; } | |
} | |
@keyframes walk-left { | |
0%, 32.99% { background-position: 0 -48px; } | |
33%, 65.99% { background-position: 32px -48px; } | |
66%, 100% { background-position: -32px -48px; } | |
} | |
@keyframes walk-right { | |
0%, 32.99% { background-position: 0 -96px; } | |
33%, 65.99% { background-position: 32px -96px; } | |
66%, 100% { background-position: -32px -96px; } | |
} |
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<div class="wrapper"> | |
<h1>Maintaining CSS Style States using "Infinite" Transition Delays</h1> | |
<div class="device"> | |
<button class="up"></button> | |
<button class="down"></button> | |
<button class="left"></buton> | |
<button class="right"></button> | |
<div class="screen"> | |
<div class="char"></div> | |
<div class="overlay"></div> | |
</div> | |
</div> | |
<section> | |
<p> | |
This demo is <strong>completely JavaScript-free</strong>. | |
Feel free to move the character around with the D-pad, and notice how it always | |
keeps its position after you stop moving. | |
</p> | |
<p> | |
This is made possible by using a virtually infinite transition delay, so that the | |
CSS rules never return to their default state. The character will always be stuck | |
in a transition and only moves when you hold down a button. | |
</p> | |
<p> | |
I've written a | |
<a target="_blank" href="http://joelb.me/blog/2012/maintaining-css-style-states-using-infinite-transition-delays/"> blog post </a> explanining how | |
this all works, but please keep in mind that things like this should ideally be handled | |
with Javascript. After all, this is a dirty hack, not a CSS feature. | |
</p> | |
</section> | |
<small>Credit goes to to <a target="_blank" href="http://www.tekepon.net/fsm/">First Seed Material</a> for the | |
character sprite, and <a target="_blank" href="http://vxresource.wordpress.com/2010/03/17/the-real-macks-tileset/"> | |
Mack</a> for the map tileset. | |
</small> | |
</div> |
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{"view":"split-vertical","seethrough":"","prefixfree":"1","page":"html"} |
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