css3背景渐变 - 技术栈

1.线性渐变

    <style>
        .box {
            width: 200px;
            height: 200px;
            border: 1px solid black;
            float: left;
            margin-left: 50px;
        }
        .box1 {
            background-image: linear-gradient(green, yellow, red);
        }
        /* 右上 */
        .box2 {
            background-image: linear-gradient(to right top, green, yellow, red);
        }
        .box3 {
            background-image: linear-gradient( 60deg, green, yellow, red);
        }
        .box4 {
            background-image: linear-gradient(green 50px, yellow 100px, red 150px);
        }
        .box5 {
            background-image: linear-gradient(20deg, green 50px, yellow 100px, red 150px);
            font-size: 80px;
            font-weight: bold;
            line-height: 200px;
            color: transparent;
            -webkit-background-clip: text;
        }
    </style>
<body>
    
    <div class="box box1">box1</div>
    <div class="box box2">box2</div>
    <div class="box box3">box3</div>
    <div class="box box4">box4</div>
    <div class="box box5">
        hello
    </div>
</body>

2.径向渐变

    <style>
        .box {
            width: 200px;
            height: 150px;
            border: 1px solid black;
            float: left;
            margin-left: 50px;
        }
        .box1 {
            /* 默认情况 */
            background-image: radial-gradient(red, yellow, green);
        }
        .box2 {
            /* 圆心在右上角 */
            background-image: radial-gradient(at right top, red, yellow, green);
        }
        .box3 {
            /* 圆心在（20，40） */
            background-image: radial-gradient(at 20px 40px,red, yellow, green);
        }
        .box4 {
            /* 通过circle，调整为⚪ */
            background-image: radial-gradient(circle,red, yellow, green);
        }
        .box5 {
            /* 圆半径是 100 50，圆心位置（120，60） */
            background-image: radial-gradient(100px 50px at 120px 60px ,red, yellow, green);
        }
    </style>
<body>
    
    <div class="box box1">默认</div>
    <div class="box box2">调整径向圆心</div>
    <div class="box box3">通过左边调整中心位置</div>
    <div class="box box4">通过circle，调整为⚪ </div>
    <div class="box box5"> 圆半径是 100 50，圆心位置（120，60）</div>
</body>

3.重复渐变

无论线性渐变，还是径向渐变，在没有发生渐变的位置，继续进行渐变，就为重复渐变。

利用重复渐变实现网格效果

代码如下：

.box {
            width: 600px;
            height: 800px;
            padding: 20px;
            border: 1px solid black;
            position: absolute;
            margin: auto;
            top: 0;
            bottom: 0;
            left: 0;
            right: 0;
            background-image: repeating-linear-gradient(transparent 0, transparent 29px, #333 30px);
            background-clip: content-box;
 }



<div class="box"></div>