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                <!DOCTYPE html>
<html lang="en">

    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="stylesheet" href="css/all.css">
    <link rel="stylesheet" href="">

    <div class="sideMenu">
            <input type="search" placeholder="請輸入搜尋名稱">
            <button><i class="fas fa-search"></i></button>
            <a href="#"><i class="fas fa-sitemap"></i>課程簡介</a>
            <a href="#"><i class="fas fa-chalkboard"></i></i>報名須知</a>
            <a href="#"><i class="fas fa-book-reader"></i>師資介紹</a>
            <a href="#"><i class="fas fa-user-graduate"></i>學員分享</a>
            <a href="#"><i class="fas fa-trophy"></i>比賽資訊</a>



                * {
    font-family: 'noto Sans TC', 'sans-serif';

body {
    height: 100%;

body {
    background-color: #546377;

a {
    text-decoration: none;

.sideMenu {
    width: 300px;
    height: 100%;
    background-color: #ff7575;
    border-right: 3px solid #d1d1d1;
    display: flex;
    //讓 sideMenu 裡面的元素變成橫排
    flex-direction: column;
    //讓 flex 的方向變成直排
    padding: 50px 0;
    //因為有 boxsizing 的關係,所以不會有 Y 軸 bar
    box-shadow: 5px 0 5px hsla(240, 40%, 15%, .6);
    //H 為 hue(色相)、S 為 saturation(飽合度)、L 為 lightness(亮度),a透明度

    form {
        display: flex;
        //讓 form 裡面的元素橫向排列
        margin: 0 10px 50px;
        border-radius: 100px;
        border: 1px solid #fff;

        input {
            width: 230px;

        button {
            width: 50px;

        button {
            border: none;
            padding: 5px 10px;
            background-color: transparent;
            color: #fff;



        button:focus {
            outline: none;
            //讓表單不要有 focus 效果


nav {
    a {
        display: block;
        color: #fff;
        padding: 20px 10px;
        position: relative;

        .fas {
            margin-right: -1.1em;
            //用 margin 的特性往右拉負值,讓文字靠左對齊
            transform: scale(0);
            transition: 0.3s;


        &:hover .fas {
            margin-right: 0em;
            transform: scale(1) //使圖示出現

        &+a::before {
            content: '';
            //要寫分隔線在選項中間,這邊使用偽元素呈現,使用偽元素一定要使用 content:'',不然不會有效果
            position: absolute;
            border-top: 1px solid #ffffff;
            left: 10px;
            right: 10px;
            top: 0px;
            //使用絕對定位方式編寫,因為 padding已設定左右 10px,所以左右邊要推擠 10px
            //然後使分隔線定位在 top:0px,固定在中間