【发布时间】：2018-08-29 06:41:59
【问题描述】：
我有以下 HTML/CSS/JS：
HTML：
<div id="blockcart-wrapper">
<div class="blockcart cart-preview">
<div class="header">
<a rel="nofollow" href="#">
<img class="cart-icon" src="https://via.placeholder.com/20x20" onclick="toggleClass()">
</a>
</div>
<div class="body" id="shopping-cart-body">
<div class="close"><a href="" onclick="toggleClass()">X</a></div>
<ul>
</ul>
<div class="shopping-cart-header">CART</div>
<div class="products-container">
<div class="product">
<span class="prodcut-image"><img src="https://via.placeholder.com/250x200"></span>
<div class="product-details">
<div class="name-header">NAME</div>
<div class="product-quantity-details">
<span class="quantity">QTY</span>
<span class="color-circle"></span>
<span class="color">COLOR</span>
</div>
<div class="price-open">
<span class="product-price">XX.XX</span>
<span class="product-link"><a href="#">öffnen</a></span>
</div>
</div>
</div>
<div class="product">
<span class="prodcut-image"><img src="https://via.placeholder.com/250x200"></span>
<div class="product-details">
<div class="name-header">NAME</div>
<div class="product-quantity-details">
<span class="quantity">QTY</span>
<span class="color-circle"></span>
<span class="color">COLOR</span>
</div>
<div class="price-open">
<span class="product-price">XX.XX</span>
<span class="product-link"><a href="#">öffnen</a></span>
</div>
</div>
</div>
<div class="checkout">
<div class="taxes">
<span class="label">Taxes</span>
<span class="value">0</span>
<hr>
</div>
<div class="cart-total">
<span class="label">Total</span>
<span class="value">0</span>
</div>
<button><a href="#">Checkout</a></button>
</div>
</div>
</div>
</div>
CSS：
.cart-preview {
float: right;
position: relative;
}
.cart-preview a,
.cart-preview a:hover,
.cart-preview a:visited {
text-decoration: none;
color: inherit;
}
.cart-preview .header {
display: block;
font-weight: bold;
border: 1px solid #808080;
padding: 5px;
cursor: pointer;
background-color: #fff;
}
.cart-preview .body {
visibility: visible;
position: fixed;
height: 100%;
top: 0;
width: 400px;
z-index: 100;
background-color: #fff;
transition: right 1s linear;
right: -400px;
}
.cart-preview .body.open {
visibility: visible;
transition: right 1s linear;
right: 0px;
}
.cart-preview .body .shooping-cart-body {
font-family: 'sans-serif';
width: 100%;
text-align: center;
}
.cart-preview .body .close{
float: left;
}
.cart-preview .body .shopping-cart-header{
font-family: 'IBMPlexSans-Bold.woff'
font-size: 45px;
margin-top: 40px;
text-align: center;
}
.cart-preview .body .products-container {
position: relative;
height: 100%;
width: 100%;
margin-top: 15px;
overflow: auto;
}
.product {
position: relative;
display: flex;
}
.product>div {
width: 50%;
}
.product .prodcut-image {
margin-right: 20px;
}
.product img {
width: 100%;
height: auto;
}
.cart-preview .body .products-container>.product-image {
position: absolute;
width: 50%;
left: 0;
}
.cart-preview .body .products-container>.product-details {
position: relative;
width: 50%;
float: left;
}
.name-header{
position: absolute;
top: 0;
}
.cart-preview .body .products-container .color-circle:before {
content: ' \25CF';
font-size: 30px;
}
.cart-preview .body .checkout {
position: absolute;
top: 80%;
height: 100%;
width: 100%;
background: gray;
}
.cart-preview .product{
margin-top: 10px;
}
.product-quantity-details{
position: absolute;
top: 25%;
align-items: center;
display: inline-flex;
}
.product-quantity-details{
position: absolute;
top: 40%;
}
.product-quantity-details .quantity{
border: 2px solid black;
margin-right: 10px;
background: white;
width: 36px;
height: 36px;
font-size: 15px;
line-height: 15px;
color: black;
}
.name-header{
position: absolute;
top: 0;
}
.price-open{
position: absolute;
bottom: 0;
}
.product-quantity-details .quantity:after{
content: 'x'
}
.cart-preview .body .checkout>button {
position: absolute;
background: black;
text-align: center;
vertical-align: middle;
color: white;
top: 15%;
line-height: 14px;
bottom: 50px;
height: 20px;
width: 205px;
left: 25%;
}
.checkout .taxes{
position: absolute;
top: 5%;
}
.checkout .cart-total{
position: absolute;
top: 10%;
float: left;
}
.cart-total .value {
float: right;
}
.cart-total .value:after {
content:'€'
}
.cart-total .label {
float: left;
}
.taxes .value {
float: right;
}
.taxes .label {
float: left;
}
.cart-preview.cart-overview {
width: 100%;
position: inherit;
}
.cart-preview.cart-overview .body {
display: block;
position: inherit;
width: 100%;
}
.cart-preview .header > :first-child {
float: left;
}
.cart-preview .header > :last-child {
float: right;
}
.cart-preview .header::after,
.cart-preview .cart-totals > div::after {
clear: both;
content: "\A0";
}
.cart-preview .body {
border: 1px solid #808080;
padding: 2px;
}
JS：
function toggleClass() {
document.getElementById('shopping-cart-body').classList.toggle('open');
}
现在我正在尝试将 div 与相对于固定父级的类 checkout 对齐，并且 div 内的元素（两个文本 div 和按钮）绝对与 checkout-div 对齐，所以结帐 div 总是有20% 的高度和里面的元素相应地对齐。我想将元素定位在绝对内部，因此按钮从底部有一个边距，例如 30px。
但是，对于.checkout div，我没有设法使用position: relative 进行这项工作。
我在代码笔中总结了这一点：https://codepen.io/anon/pen/BOLpdG
有人可以帮我对齐 div 吗？
【问题讨论】：
-
你能不能画个粗略的带值的草图，以便更好地理解你想要什么
-
添加了一个草图，希望它现在更清晰。 div .checkout 应该有 .body 的 20%（body 是固定的，高度是 100%）并且 div .checkout 中的元素应该是绝对的