关于圣杯布局和双飞翼布局

<p id="container">
    <p id="center">center</p>
    <p id="left">left</p>
    <p id="right">right</p>
</p>

#container {
            padding: 0 100px 0 200px;/*左宽度为200px 右边宽度为100px*/
}
.col {
    float: left;
    position: relative;
    height: 300px;
}
#center {
    width: 100%;
    background: #eee;
}
#left {
    width: 200px;
    background: blue;
    margin-left: -100%;
    right: 200px;
}
#right {
    width: 100px;
    background: red;
    margin-right: -100px;
}

<p id="container">
    <p id="center" class="col">
        <p class="wrap">center</p>
    </p>
    <p id="left" class="col">left</p>
    <p id="right" class="col">right</p>
</p>

.col {
            float: left;
            height: 300px;
}
#center {
    width: 100%;
    background: #eee;
}
#left {
    width: 200px;
    background: blue;
    margin-left: -100%;
}
#right {
    width: 100px;
    background: red;
    margin-left: -100px;
}
#center .wrap {
    margin: 0 100px 0 200px;
}