html - 为什么我的一些 CSS 选择器不起作用？

问题描述

我是 css/html 的新手，我正在尝试复制视频代码。我以相同的方式逐行执行，但由于某种原因，代码的工作方式不同。首先是 .container .row100 中的自动调整。第二件事是带有逗号的选择器。我一直在试图找出我做错了什么，但我无法弄清楚。

这是代码：

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    overflow-x: hidden;
}

section{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    width: 100%;
    background: #001923;
}

section::before{
    content:'';
    position: absolute;
    width: 400px;
    height: 400px;
    background: linear-gradient(#ffeb3b, #e91e63);
    border-radius: 50%;
    transform: translate(-420px, -180px);
}

section::after{
    content:'';
    position: absolute;
    width: 350px;
    height: 350px;
    background: linear-gradient(#2196f3, #83d8ff);
    border-radius: 50%;
    transform: translate(400px, 180px);
}

.container{
    position: relative;
    z-index: 1000;
    width: 100%;
    max-width: 1000px;
    padding:50px;
    background: rgba(255,255,255,0.1);
    box-shadow: 0 25px 45px rgba(0,0,0,0.1);
    border: 1px solid rgba(255,255,255,0.25);
    border-right: 1px solid rgba(255,255,255,0.1);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    overflow: hidden;
    backdrop-filter: blur(25px);
}

.container::before{
    content: '';
    position: absolute;
    top: 0;
    left: -40%;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.05);
    pointer-events: none;
    transform: skewX(-15deg);
}

.container h2{
    width: 100%;
    text-align: center;
    color: #fff;
    font-size: 36px;
    margin-bottom: 20px;
}

.container .row100{
    position: relative;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px,1fr))
}

.container .row100 .col{
    position: relative;
    width: 100%;
    padding: 0 10px;
    margin: 30px 0 20px;
}

.container .row100 .col .inputBox{
    position: relative;
    width: 100%;
    height: 40px;
    color: #fff;
}

.container .row100 .col .inputBox input,
.container .row100 .col .inputBox textarea{
    position: absolute;
    width: 100%;
    height: 100%;
    background: transparent;
    box-shadow: none;
    border: none;
    outline: none;
    font-size: 15px;
    padding: 0 10px;
    z-index: 1;
    color: #000;
}

.container .row100 .col .inputBox .text{
    position: absolute;
    top: 0;
    left: 0;
    line-height: 40px;
    font-size: 18px;
    padding: 0 18px;
    display: block;
    transition: 0.5s;
    pointer-events: none;
}

.container .row100 .col .inputBox input:focus + .text,
.container .row100 .col .inputBox input:valid + .text,
.container .row100 .col .inputBox textarea:focus + .text,
.container .row100 .col .inputBox textarea:valid + .text{
    top: -35px;
    left: -10px;
}

.container .row100 .col .inputBox .line{
    position: absolute;
    bottom: 0;
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    transition: 0.5s;
    border-radius: 2px;
    pointer-events: none;
}

.container .row100 .col .inputBox input:focus ~ .line,
.container .row100 .col .inputBox input:valid ~ .line{
    height: 100%;
}

.container .row100 .col .inputBox.textarea{
    position:relative;
    width: 100%;
    height: 100px;
    padding: 10px 0;
}

.container .row100 .col .inputBox textarea:focus ~ .line,
.container .row100 .col .inputBox textarea:valid ~ .line{
    height: 100%;
}

.container .row100 .col input[type="submit"]{
    border: none;
    padding: 10px 40px;
    cursor: pointer;
    outline: none; 
    background: #fff;
    color: #000;
    font-weight: 600;
    font-size: 18px;
    border-radius: 2px;
}

<!DOCTYPE html>
<html>
    <head>
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <title>Make Request Page</title>
        <link rel="stylesheet" type="text/css" href="C:\Users\haloe\PycharmProjects\Reimbursements - Copy\styles\makeRequestPage.css">
    </head>
    <body>
        <section>
            <div class="container">
                <h2>Reimbursement Request Form</h2>
            
                <div class="row100">
                    <div class="col">
                        <div class="inputbox">
                            <input type="text" name="" required="required">
                            <span class="text">First Name</span>
                            <span class="line"></span>
                        </div>
                    </div>
                </div>
                <div class="row100">
                    <div class="col">
                        <div class="inputbox">
                            <input type="text" name="" required="required">
                            <span class="text">Last Name</span>
                            <span class="line"></span>
                        </div>
                    </div>
                </div>
                <div class="row100">
                    <div class="col">
                        <div class="inputbox">
                            <input type="text" name="" required="required">
                            <span class="text">Email</span>
                            <span class="line"></span>
                        </div>
                    </div>
                </div>
                <div class="row100">
                    <div class="col">
                        <div class="inputbox">
                            <input type="text" name="" required="required">
                            <span class="text">Mobil</span>
                            <span class="line"></span>
                        </div>
                    </div>
                </div>

                <div class="row100">
                    <div class="col">
                        <div class="inputbox textarea">
                            <textarea required="required"></textarea>
                            <span class="text">Type message here</span>
                            <span class="line"></span>
                        </div>
                    </div>
                </div>

                <div class="row100">
                    <div class="col">
                        <input type="button" value="Submit">
                    </div>
                </div>
            </div>
        </section>
    </body>
</html>

这是它的样子：

这是供参考的视频： https ://www.youtube.com/watch?v=AdEzWQfgZgw

这是它应该看起来的样子：

标签： htmlcsscss-selectors

html - 为什么我的一些 CSS 选择器不起作用？

问题描述

解决方案

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