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CSS學習(十四)-CSS顏色之中的一個

rac 顏色 opacity bsp pac pre alpha color data-

一、理論:
1.RGB色彩模式
a.CMYK色彩模式
b.索引色彩模式 (主要用於web)
c.灰度模式
d.雙色調模式
2.opacity:
a.alphavalue:透明度
b.inherit:繼承父元素的不透明性
二、實踐:

1.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        .row{
            overflow: hidden;
        }
        .row div{
            width: 80px;
            height: 80px;
            line-height: 80px;
            text-align: center;
            float:left;
        }
        .row:nth-of-type(1) div {
            background: #202189;
            color:#fff;
        }
        .row:nth-of-type(2) div {
            background: #31b231;
        }
        .row:nth-of-type(3) div {
            background: #239587;
        }
        .row:nth-of-type(4) div{
            background: #333333;
        }
        .row div:nth-child(1){
            background: #004099;
            color:#8f8f8f;
        }
        .row div:nth-child(2){
            opacity: 1;
        }
        .row div:nth-child(3){
            opacity: 0.8;
        }
        .row div:nth-child(4){
            opacity: 0.6;
        }
        .row div:nth-child(5){
            opacity: 0.4;
        }
        .row div:nth-child(6){
            opacity: 0.2;
        }
        .row div:nth-of-type(1) div {
            opacity: 1;
        }
    </style>
</head>
<body>
<div class="demo">
    <div class="row">
        <div>
            1
        </div>
        <div>
            0.8
        </div>
        <div>
            0.6
        </div>
        <div>
            0.4
        </div>
        <div>
            0.2
        </div>
    </div>
    <div class="row">
        <div>
            1
        </div>
        <div>
            0.8
        </div>
        <div>
            0.6
        </div>
        <div>
            0.4
        </div>
        <div>
            0.2
        </div>
    </div>
    <div class="row">
        <div>
            1
        </div>
        <div>
            0.8
        </div>
        <div>
            0.6
        </div>
        <div>
            0.4
        </div>
        <div>
            0.2
        </div>
    </div>
    <div class="row">
        <div>
            1
        </div>
        <div>
            0.8
        </div>
        <div>
            0.6
        </div>
        <div>
            0.4
        </div>
        <div>
            0.2
        </div>
    </div>
    <div class="row">
        <div>
            1
        </div>
        <div>
            0.8
        </div>
        <div>
            0.6
        </div>
        <div>
            0.4
        </div>
        <div>
            0.2
        </div>
    </div>
</div>

</body>
</html>


CSS學習(十四)-CSS顏色之中的一個