前端面試知識點梳理：css基礎篇

時間 2020-07-08

標籤前端面試知識梳理 css 基礎欄目快樂工作简体版

原文原文鏈接

高效學習三部曲：css

找準知識體系html
刻意訓練前端
及時反饋web

前端知識體系面試

css基礎知識
js基礎語法
js-web-api
開發環境
運行環境
http協議

HTML面試題

如何理解HTML語義化

讓人更容易讀懂(增長代碼可讀性) 讓搜索引擎更容易讀懂代碼(SEO) api

塊狀元素&內聯元素

css佈局

盒模型寬度計算

margin縱向重疊問題

margin負值問題

BFC理解與應用

float佈局

聖盃佈局bash

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>聖盃佈局</title>
    <style type="text/css">
        body {
            min-width: 550px;
        }
        #header {
            text-align: center;
            background-color: #f1f1f1;
        }

        #container {
            padding-left: 200px;
            padding-right: 150px;
        }
        #container .column {
            float: left;
        }

        #center {
            background-color: #ccc;
            width: 100%;
        }
        #left {
            position: relative;
            background-color: yellow;
            width: 200px;
            margin-left: -100%;
            right: 200px;
        }
        #right {
            background-color: red;
            width: 150px;
            margin-right: -150px;
        }

        #footer {
            text-align: center;
            background-color: #f1f1f1;
        }

        /* 手寫 clearfix */
        .clearfix:after {
            content: '';
            display: table;
            clear: both;
        }
    </style>
</head>
<body>
    <div id="header">this is header</div>
    <div id="container" class="clearfix">
        <div id="center" class="column">this is center</div>
        <div id="left" class="column">this is left</div>
        <div id="right" class="column">this is right</div>
    </div>
    <div id="footer">this is footer</div>
</body>
</html>
複製代碼

雙飛翼佈局佈局

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>雙飛翼佈局</title>
    <style type="text/css">
        body {
            min-width: 550px;
        }
        .col {
            float: left;
        }

        #main {
            width: 100%;
            height: 200px;
            background-color: #ccc;
        }
        #main-wrap {
            margin: 0 190px 0 190px;
        }

        #left {
            width: 190px;
            height: 200px;
            background-color: #0000FF;
            margin-left: -100%;
        }
        #right {
            width: 190px;
            height: 200px;
            background-color: #FF0000;
            margin-left: -190px;
        }
    </style>
</head>
<body>
    <div id="main" class="col">
        <div id="main-wrap">
            this is main
        </div>
    </div>
    <div id="left" class="col">
        this is left
    </div>
    <div id="right" class="col">
        this is right
    </div>
</body>
</html>
複製代碼

flex佈局

flex實現一個三點的篩子學習

代碼flex

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>flex 畫骰子</title>
    <style type="text/css">
        .box {
            width: 200px;
            height: 200px;
            border: 2px solid #ccc;
            border-radius: 10px;
            padding: 20px;
            display: flex;
            justify-content: space-between;
        }
        .item {
            display: block;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: #666;
        }
        .item:nth-child(2) {
            align-self: center;
        }
        .item:nth-child(3) {
            align-self: flex-end;
        }

    </style>
</head>
<body>
    <div class="box">
        <span class="item"></span>
        <span class="item"></span>
        <span class="item"></span>
    </div>
</body>
</html>
複製代碼