Example of how to use CSS3 to layout elements around a center point

This article introduces an example of how CSS3 can be used to layout elements around a center point. The details are as follows:

The effect is as shown below:

Code implementation:

<style>
    *{
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }
    .surround-box,
    .center-point{
        position: absolute;
        top: 50%;
        left: 50%;
        width: 20px;
        height: 20px;
        margin-left: -10px;
        margin-top: -10px;
        border-radius: 50%;
        background-color: #000;
    }
    .circle{
        /* This must be absolutely positioned so that the position can be spread out*/
        position: absolute;
        top: -10px;
        left: -10px;
        width: 40px;
        height: 40px;
        line-height: 40px;
        border-radius: 50%;
        text-align: center;
        color: #fff;
    }
    .circle1{
        background-color: red;
        /* rotateZ controls the direction, each element rotates 30 degrees, and 12 elements are exactly 360 degrees. translateY controls the distance of each element from the center point*/
        transform: rotateZ(30deg) translateY(80px);
    }
    .circle2{
        background-color: orange;
        transform: rotateZ(60deg) translateY(80px);
    }
    .circle3{
        background-color: yellow;
        transform: rotateZ(90deg) translateY(80px);
    }
    .circle4{
        background-color: green;
        transform: rotateZ(120deg) translateY(80px);
    }
    .circle5{
        background-color: seagreen;
        transform: rotateZ(150deg) translateY(80px);
    }
    .circle6{
        background-color: blue;
        transform: rotateZ(180deg) translateY(80px);
    }
    .circle7{
        background-color: purple;
        transform: rotateZ(210deg) translateY(80px);
    }
    .circle8{
        background-color: lightsalmon;
        transform: rotateZ(240deg) translateY(80px);
    }
    .circle9{
        background-color: deeppink;
        transform: rotateZ(270deg) translateY(80px);
    }
    .circle10{
        background-color: lightyellow;
        transform: rotateZ(300deg) translateY(80px);
    }
    .circle11{
        background-color: lightgreen;
        transform: rotateZ(330deg) translateY(80px);
    }
    .circle12{
        background-color: lightslategrey;
        transform: rotateZ(360deg) translateY(80px);
    }
</style>

<body>
    <div class="center-point"></div>
    <div class="surround-box">
        <div class="circle circle1">1</div>
        <div class="circle circle2">2</div>
        <div class="circle circle3">3</div>
        <div class="circle circle4">4</div>
        <div class="circle circle5">5</div>
        <div class="circle circle6">6</div>
        <div class="circle circle7">7</div>
        <div class="circle circle8">8</div>
        <div class="circle circle9">9</div>
        <div class="circle circle10">10</div>
        <div class="circle circle11">11</div>
        <div class="circle circle12">12</div>
    </div>
</body>

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