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我在容器中水平放置了一組<div>的陣容，我正在尋找以我的web page（Squarespace）爲中心將我的外容器<div>類與其餘代碼對齊。如何以變化的屏幕尺寸居中div？
我編寫了一個CodePen重新創建頁面，我仍然無法以Main-content部分爲中心在outer-container範圍內調整屏幕大小。
任何幫助，非常感謝！
<section class="Main-content" data-content-field="main-content" id="yui_3_17_2_2_1507859188217_558">
<div class="sqs-layout sqs-grid-12 columns-12 sqs-frontend-overlay-editor-widget-host" data-type="page" data-updated-on="1507857777989" id="page-59cab354bebafb4216478596">
<div class="row sqs-row" id="yui_3_17_2_2_1507859188217_669">
<div class="col sqs-col-12 span-12" id="yui_3_17_2_2_1507859188217_668">
<div class="sqs-block code-block sqs-block-code" data-block-type="23" id="block-yui_3_17_2_22_1507595367220_25824">
<div class="sqs-block-content">
<h1 align="center">Choose your subscription plan</h1>
</div>
</div>
<div class="sqs-block code-block sqs-block-code" data-block-type="23" id="block-yui_3_17_2_12_1507852892558_4858">
<div class="sqs-block-content">
<h3 style="text-align:center;color:#0083f5;">Have a MyDietGoal Promotion Code?</h3>
</div>
</div>
<div class="sqs-block code-block sqs-block-code" data-block-type="23" id="block-yui_3_17_2_2_1507522278297_5479">
<div class="sqs-block-content">
<div class="outer-container" id="backgroundDiv" style="width: max-content; height: max-content; padding: 100px;">
<div class="container container1">
<div class="w-table">
<div class="w-table-cell">
<div class="w-container">
<div class="w-card color-green">
<div class="card-header">
<div class="w-title" style="cursor:default">
<h2><font size="7px">Novice</font></h2>
</div>
<div class="w-price" style="cursor:default">
$4.99
<h3>/ Week</h3>
</div>
<div class="container-button">
<a class="w-button" id="btn1" href="/meal-planner" target="_blank">Sign up </a>
</div>
</div>
<div class="card-content" style="cursor:default">
<div class="w-item" style="cursor:default">
<span>Weekly </span>Meal Plans
</div>
<div class="w-item" style="cursor:default">
<span>Personal </span>Dietary Assessment and Advice
</div>
<div class="w-item" style="cursor:default">
<span>Full </span>Access to the <a href="/mydietgoal-dietary-catalogue">Food Catalogue</a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="container container2">
<div class="w-table">
<div class="w-table-cell">
<div class="w-container">
<div class="w-card color-blue">
<div class="card-header">
<div class="w-title" style="cursor:default">
<h2><font size="7px">Apprentice</font></h2>
</div>
<div class="w-price" style="cursor:default">
$9.99
<h3>/ Week</h3>
</div>
<div class="container-button">
<a class="w-button" id="btn2" href="/meal-planner" target="_blank">Sign up </a>
</div>
</div>
<div class="card-content" style="cursor:default">
<div class="w-item" style="cursor:default">
<span>Weekly </span>Meal Plans
</div>
<div class="w-item" style="cursor:default">
<span>Personal </span>Dietary Assessment and Advice
</div>
<div class="w-item" style="cursor:default">
<span>Full </span>Access to the <a href="/mydietgoal-dietary-catalogue">Food Catalogue</a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="container container3">
<div class="w-table">
<div class="w-table-cell">
<div class="w-container">
<div class="w-card color-orange">
<div class="card-header">
<div class="w-title" style="cursor:default">
<h2><font size="7px">Advanced</font></h2>
</div>
<div class="w-price" style="cursor:default">
$14.99
<h3>/ Week</h3>
</div>
<div class="container-button">
<a class="w-button" id="btn3" href="/meal-planner" target="_blank">Sign up </a>
</div>
</div>
<div class="card-content" style="cursor:default">
<div class="w-item" style="cursor:default">
<span>Weekly </span>Meal Plans
</div>
<div class="w-item" style="cursor:default">
<span>Personal </span>Dietary Assessment and Advice
</div>
<div class="w-item" style="cursor:default">
<span>Full </span>Access to the <a href="/mydietgoal-dietary-catalogue">Food Catalogue</a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
如何中心內容與動態尺寸，家長裏用動態的大小，沿兩個軸：https://stackoverflow.com/questions/6464592/how-to-align-entire-html-body-to-中心/ 35047036＃35047036 –
它在鋼筆上運行得非常好，但在我的網站上卻沒有！望着它 –