前端入坑纪 46

眼见便是周末了，今天木有js，纯css3来构建模拟表单上的单选和多选效果。

好，详解如下！

OK，first things first！ github项目地址

简单素颜截图

HTML 结构

    <div class="main">
        <ul>
            <li>性别：</li>
            <li>
                <input type="radio" name="sex" id="radioM" checked value="mail"><label for="radioM">男 Mail</label>
            </li>
            <li>
                <input type="radio" name="sex" id="radioF" value="femail"><label for="radioF">女 Femail</label>
            </li>
            <li>喜好：</li>
            <li>
                <input type="checkbox" name="hobby" id="hobby1" checked value="music"><label for="hobby1">音乐 Music</label>
            </li>
            <li>
                <input type="checkbox" name="hobby" id="hobby2" value="movie"><label for="hobby2">电影 Movie</label>
            </li>
            <li>
                <input type="checkbox" name="hobby" id="hobby3" value="reading"><label for="hobby3">阅读 Reading</label>
            </li>
            <li>最喜欢的饮料：</li>
            <li>
                <div class="selectWrp">
                    <select>
                        <optgroup>
                            <option value="可乐">可乐</option>
                            <option value="芬达">芬达</option>
                            <option value="纯水" selected>纯水</option>
                            <option value="脉动">脉动</option>
                            <option value="激活">激活</option>
                        </optgroup>
                    </select>
                </div>
            </li>
        </ul>
    </div>

我把表单项放到了li里面，这样格式比较好看。诸君请随意！

CSS 结构

        body {
            padding: 0;
            margin: 0;
            background-color: #fdfdfd;
        }
        
        ul,
        li {
            list-style: none
        }
        
        li {
            line-height: 46px;
        }
        /* 单选按钮样式 */
        
        input[type=radio] {
            visibility: hidden;
            height: 0;
            width: 0;
        }
        
        input[type=radio]+label {
            padding-left: 38px;
            display: inline-block;
            position: relative;
        }
        
        input[type=radio]+label::before {
            content: "";
            position: absolute;
            display: inline-block;
            top: 12px;
            left: 6px;
            height: 20px;
            width: 20px;
            border-radius: 50%;
            border: 2px solid lightblue
        }
        
        input[type=radio]+label::after {
            content: "";
            display: block;
            position: absolute;
            transform-origin: 50% 50% 0;
            transform: scale(0, 0);
            transition: all 200ms ease-in;
            background-color: transparent;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            top: 18px;
            left: 12px;
        }
        
        input[type=radio]:checked+label::after {
            background-color: lightblue;
            transform: scale(1, 1)
        }
        /* 多选按钮 */
        
        input[type=checkbox] {
            visibility: hidden;
            width: 0;
            height: 0;
        }
        
        input[type=checkbox]+label {
            padding-left: 38px;
            display: inline-block;
            position: relative;
        }
        
        input[type=checkbox]+label::before {
            content: "";
            position: absolute;
            display: inline-block;
            top: 12px;
            left: 6px;
            height: 20px;
            width: 20px;
            border: 2px solid lightblue
        }
        
        input[type=checkbox]+label::after {
            content: "√";
            font-size: 20px;
            line-height: 20px;
            font-weight: bold;
            color: lightblue;
            display: block;
            position: absolute;
            transform-origin: 50% 50% 0;
            transform: scale(0, 0);
            transition: all 200ms ease-in;
            background-color: transparent;
            width: 12px;
            height: 20px;
            top: 14px;
            left: 12px;
        }
        
        input[type=checkbox]:checked+label::after {
            transform: scale(1, 1);
        }
        /* select 改动小 */
        
        .selectWrp {
            display: inline-block;
            position: relative;
            width: 60%;
        }
        
        select {
            outline: none;
            -webkit-appearance: none;
            width: 100%;
            box-sizing: border-box;
            border: 1px solid lightblue;
            padding: 6px 20px;
            text-align: center;
            color: #333;
            ;
        }
        
        .selectWrp::after {
            content: "";
            display: block;
            position: absolute;
            top: 16px;
            right: 8px;
            height: 0;
            width: 0;
            border-width: 5px;
            transform: rotateZ(-45deg);
            border-color: transparent transparent skyblue skyblue;
            border-style: solid;
        }
        
        select:active+.selectWrp::after {
            transform: rotateZ(135deg);
        }

这个css3细节上的东西还是要诸君亲自动手尝试，才好掌握！真有问题，留言吧

好了，到此，本文告一段落！感谢您的阅读！祝您和您的家人身体健康，阖家幸福！