看一看這個http://jsfiddle.net/WW32n/1/這裏提供一些參考http://nicolasgallagher.com/pure-css-speech-bubbles/demo/
<p class="triangle-isosceles right">The entire appearance is created only with CSS.</p>
和CSS
.triangle-isosceles {
position:relative;
padding:15px;
margin:1em 0 3em;
color:#000;
background:#f3961c; /* default background for browsers without gradient support */
/* css3 */
background:-webkit-gradient(linear, 0 0, 0 100%, from(#f9d835), to(#f3961c));
background:-moz-linear-gradient(#f9d835, #f3961c);
background:-o-linear-gradient(#f9d835, #f3961c);
background:linear-gradient(#f9d835, #f3961c);
-webkit-border-radius:10px;
-moz-border-radius:10px;
border-radius:10px;
}
/* creates triangle */
.triangle-isosceles:after {
content:"";
position:absolute;
bottom:-15px; /* value = - border-top-width - border-bottom-width */
left:50px; /* controls horizontal position */
border-width:15px 15px 0; /* vary these values to change the angle of the vertex */
border-style:solid;
border-color:#f3961c transparent;
/* reduce the damage in FF3.0 */
display:block;
width:0;
}
結帳的三角形生成:HTTP:// apps.eky.hk/css-triangle-generator/ –
or this http://cssarrowplease.com/ – Pete