html - 导航栏没有出现

Question

我正在尝试使用 CSS 动画创建响应式导航栏。我正在使用此代码 Codepen_Code ，它无法在我的笔记本电脑上正常运行。当我运行它时，唯一的复选框出现在导航列表下方。如果我必须使用任何类型的 CDN，请帮助我并建议我。

HTML代码

<div class="navigation">
<input type="checkbox" class="navigation__checkbox" id="navi-toggle">
<label for="navi-toggle" class="navigation__button">
            <span class="navigation__icon">&nbsp;</span>
</label>
 <div class="navigation__background">&nbsp;</div>
<nav class="navigation__nav">
<ul class="navigation__list">
  <li class="navigation__item"><a href="#" class="navigation__link">Home</a> 
</li>
  <li class="navigation__item"><a href="#" class="navigation__link">About 
us</a> </li>
  <li class="navigation__item"><a href="#" class="navigation__link">Contact 
Us</a> </li>
</ul>
</nav>
</div>

CSS

.navigation {

    &__checkbox {
        display: none;

    }

    &__button {
        background-color: #fff;
        height: 7rem;
        width: 7rem;
        border-radius: 50%;
        position: fixed;
        top: 4rem;
        right: 6rem;
        z-index: 2000;
        box-shadow: 0 1rem 3rem rgba(#000, .2);
        text-align: center;
        cursor: pointer;
    }

    &__background {
        height: 6rem;
        width: 6rem;
        border-radius: 50%;
        position: fixed;
        top: 4.5rem;
        right: 6.5rem;
        background-image: radial-gradient(#2998ff, #5643fa);
        z-index: 1000;
        transition: transform .8s cubic-bezier(0.86, 0, 0.07, 1);
    }

    &__nav {
        height: 100vh;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 1500;
        opacity: 0;
        width: 0;
        transition: all .8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    }

    &__list {
        list-style: none;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        text-align: center;
        width: 100%;
    }

    &__link {

        &:link,
        &:visited {
            display: inline-block;
            font-size: 3rem;
            font-weight: 300;
            padding: 1rem 2rem;
            color: #fff;
            text-decoration: none;
            text-transform: uppercase;
            background-image: linear-gradient(120deg, transparent 0%, transparent 50%, #fff 50%);
            background-size: 230%;
            transition: all .4s;
        }

        &:hover,
        &:active {
            background-position: 100%;
            color: #2998ff;
            transform: translateX(1rem);
        }
    }

    &__checkbox:checked ~ &__background {
        transform: scale(80);
    }

    &__checkbox:checked ~ &__nav {
        opacity: 1;
        width: 100%;
    }

    &__icon {
        position: relative;
        margin-top: 3.5rem;

        &,
        &::before,
        &::after {
            width: 3rem;
            height: 2px;
            background-color: #333;
            display: inline-block;
        }

        &::before,
        &::after {
            content: "";
            position: absolute;
            left: 0;
            transition: all .2s;
        }

        &::before { top: -.8rem }
        &::after { bottom: -.8rem }
    }

    &__button:hover &__icon::before {
        top: -1rem;
    }

    &__button:hover &__icon::after {
        bottom: -1rem;
    }

    &__checkbox:checked + &__button &__icon {
        background-color: transparent;
    }

    &__checkbox:checked + &__button &__icon::before {
        transform: rotate(135deg);
        top: 0;
    }

    &__checkbox:checked + &__button &__icon::after {
        transform: rotate(-135deg);
        bottom: 0;
    }
}

Answer 1

此样式是 SCSS 并且您正在使用 css 这就是它显示复选框的原因 我自己检查了它并且我从 SCSS 更改css 我看到了结果所以请使用 SCSS 一切都会好的

scss link  https://codepen.io/AElkhodary/pen/pVVNBw
css link https://codepen.io/AElkhodary/pen/errBoy

我已经为你制作了一个带有css的版本

https://codepen.io/AElkhodary/pen/zjjoVa