移動端 css實現自適應正圓 ( 寬高隨着手機屏幕寬度自適應 )

時間 2019-11-14

標籤移動 css 實現自適應隨着手機屏幕寬度欄目無線简体版

原文原文鏈接

序言：應朋友要求隨手寫了一下移動端 css實現自適應正圓 ( 寬高隨着手機屏幕寬度自適應 ) ，以備後用css

LESS代碼：html

.adaptive-circle {
    margin: 50px auto 0;
    width: 80%;
    height: 0;
    padding-top: 80%;

    border-radius: 100%;
    border: 1px solid #000;
    box-sizing: border-box; // for .layout { height: 100%; }

    position: relative;

    .layout {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        overflow: hidden;
        text-align: center;

        &.middle {
            &:before {
                display: inline-block;
                vertical-align: middle;

                content: '';
                height: 100%;
                width: 0;
                overflow: hidden;
            }
            div:first-child {
                display: inline-block;
                vertical-align: middle;
            }
        }
    }
}

View Code

CSS代碼：ide

<style>
    .adaptive-circle {
        margin: 50px auto 0;
        width: 80%;
        height: 0;
        padding-top: 80%;

        border-radius: 100%;
        border: 1px solid #000;
        box-sizing: border-box;

        position: relative;
    }
    .adaptive-circle .layout {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        overflow: hidden;
        text-align: center;
    }
    .adaptive-circle .layout.middle:before {
        display: inline-block;
        vertical-align: middle;

        content: '';
        height: 100%;
        width: 0;
        overflow: hidden;
    }
    .adaptive-circle .layout.middle div:first-child {
        display: inline-block;
        vertical-align: middle;
    }
</style>

HTML代碼:spa

<div class="adaptive-circle">
    <div class="layout middle">
        <div>
            <h2>自適應標題</h2>
            <p>自適應結束</p>
        </div>
    </div>
</div>

完整demo代碼：scala

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no">
    <title>移動端 css實現自適應正圓 ( 寬高隨着手機屏幕寬度自適應 ) 博客園(楊君華)</title>
</head>

<style>
    .adaptive-circle {
        margin: 50px auto 0;
        width: 80%;
        height: 0;
        padding-top: 80%;

        border-radius: 100%;
        border: 1px solid #000;
        box-sizing: border-box;

        position: relative;
    }
    .adaptive-circle .layout {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        overflow: hidden;
        text-align: center;
    }
    .adaptive-circle .layout.middle:before {
        display: inline-block;
        vertical-align: middle;

        content: '';
        height: 100%;
        width: 0;
        overflow: hidden;
    }
    .adaptive-circle .layout.middle div:first-child {
        display: inline-block;
        vertical-align: middle;
    }
</style>

<body>
    <div class="adaptive-circle">
        <div class="layout middle">
            <div>
                <h2>自適應標題</h2>
                <p>自適應介紹</p>
            </div>
        </div>
    </div>
</body>
</html>