CSS zakrzywione gradienty i box-shadow

Question

Czy można użyć CSS, aby lewy i prawy brzeg kontenera treści wyglądał jak ten obraz? Próbowałem znaleźć sposób, aby to zrobić bez użycia obrazu, jeśli to możliwe.

Oto jsFiddle że pracuję dalej. CSS dla "najwyższej" klasy nigdy nie zostanie zastosowany. Wygląda na to, że CSS dla klasy "bottom" działa dobrze.

http://jsfiddle.net/kXuQY/

HTML:

<div class="drop-shadow top bottom"> 
    Content here. 
</div> 

CSS:

.drop-shadow { 
/** Create container. Box-shadow here is to color the inside of the container **/ 
position:relative; 
width:50%; 
background: none repeat scroll 0 0 #FFFFFF; 
box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 0, 0, 0.1) inset; 
padding:3em; 
margin: 2em 20px 4em; 
text-align:center 
} 

.top:before, 
.top:after { 
    /** Generate pseudo-elements ('before' and 'after') and push them behind the container box. Position pseudo-elements ('before', and 'after') and give them dimensions **/ 
content:""; 
position:absolute; 
z-index:-1; 
top:20px; 
left:0; 
width:40%; 
height:1em; 
max-width:150px; 
-webkit-box-shadow:0 15px 10px rgba(0, 0, 0, 0.7); 
-moz-box-shadow:0 15px 10px rgba(0, 0, 0, 0.7); 
box-shadow:0 15px 10px rgba(0, 0, 0, 0.7); 
-webkit-transform:rotate(70deg); 
-moz-transform:rotate(70deg); 
-o-transform:rotate(70deg); 
transform:rotate(70deg); 
} 

.top:after{ 
    /**One of the pseudo-elements then needs to be positioned on the other side of the element and rotated in the opposite direction. This is easily done by overriding only the properties that need to differ **/ 
right:0; 
left:auto; 
-webkit-transform:rotate(-70deg); 
-moz-transform:rotate(-70deg); 
-o-transform:rotate(-70deg); 
transform:rotate(-70deg); 
} 

.bottom:before, 
.bottom:after { 
    /** Generate pseudo-elements ('before' and 'after') and push them behind the container box. Position pseudo-elements ('before', and 'after') and give them dimensions **/ 
content:""; 
position:absolute; 
z-index:-2; 
top:90px; 
left:0; 
width:10%; 
max-width:150px; 
-webkit-box-shadow:0 15px 10px rgba(0, 0, 0, 0.7); 
-moz-box-shadow:0 15px 10px rgba(0, 0, 0, 0.7); 
box-shadow:0 15px 10px rgba(0, 0, 0, 0.7); 
-webkit-transform:rotate(99deg); 
-moz-transform:rotate(99deg); 
-o-transform:rotate(99deg); 
transform:rotate(99deg); 
} 

.bottom:after{ 
    /**One of the pseudo-elements then needs to be positioned on the other side of the element and rotated in the opposite direction. This is easily done by overriding only the properties that need to differ **/ 
right:0; 
left:auto; 
-webkit-transform:rotate(-99deg); 
-moz-transform:rotate(-99deg); 
-o-transform:rotate(-99deg); 
transform:rotate(-99deg); 
} 

Answer 1

można użyć przed i po właściwości CSS, aby to osiągnąć. to check out: http://nicolasgallagher.com/css-drop-shadows-without-images/demo/

Innym sposobem:

HTML:

<div id="box"> 
<h1>css-3-box-shadow</h1> 
<p>some text</p> 
</div> 

CSS:

#box:after { 
    left: auto; 
    right: 10px; 
    transform: rotate(3deg); 
} 
#box:before, #box:after { 
    background: none repeat scroll 0 0 rgba(0, 0, 0, 0.7); 
    bottom: 15px; 
    box-shadow: 0 15px 10px rgba(0, 0, 0, 0.7); 
    content: ""; 
    left: 10px; 
    max-width: 300px; 
    position: absolute; 
    top: 80%; 
    transform: rotate(-3deg); 
    width: 50%; 
    z-index: -1; 
} 
#box:before, #box:after { 
    background: none repeat scroll 0 0 rgba(0, 0, 0, 0.7); 
    bottom: 15px; 
    box-shadow: 0 15px 10px rgba(0, 0, 0, 0.7); 
    content: ""; 
    left: 10px; 
    max-width: 300px; 
    position: absolute; 
    top: 80%; 
    transform: rotate(-3deg); 
    width: 50%; 
    z-index: -1; 
} 
#box { 
    background: none repeat scroll 0 0 #DDDDDD; 
    border-radius: 4px 4px 4px 4px; 
    color: rgba(0, 0, 0, 0.8); 
    line-height: 1.5; 
    margin: 60px auto; 
    padding: 2em 1.5em; 
    position: relative; 
    text-shadow: 0 1px 0 #FFFFFF; 
    width: 60%; 
} 

Ref: http://www.red-team-design.com/wp-content/uploads/2011/04/css3-box-shadow.html

Nadzieję, że pomaga.