How to align html elements horizontally when they have different parents
Question
I have a basic html document with a sticky header and footer. I also have a div below the header that sticks to the header because it will eventually contain some tabs above a form. I have tried to align the form below this vertically but they don't line up. The problem is the tab div does not have a scrollbar but the form does. This means the width of the form is different to the width of the tabs. I tried to set them to 70% of the width and center but, because of the scrollbar they don't line up. I've tried some javascript to get the width of the scrollbar and then add this to the current right margin but it doesn't work. You will see the form is not as wide as the tabs div. I have spent hours on this. Also, I tried adding a margin-bottom to the form but no margin appears below the border.
$(document).ready(function () { setFormsWidth(); }); function setFormsWidth() { let scrollbox = document.createElement('div'); // Make box scrollable scrollbox.style.overflow = 'scroll'; // Append box to document document.body.appendChild(scrollbox); // Measure inner width of box scrollBarWidth = scrollbox.offsetWidth - scrollbox.clientWidth; // Remove box document.body.removeChild(scrollbox); // Get current width of right margin, which should be 30% of the // width of the form-panel parent (the content class). var formPanel = document.getElementById("main-form"); // Get the current right margin and remove the px at end of number var style = window.getComputedStyle(formPanel); var marginRightString = style.getPropertyValue('margin-right'); var marginRight = marginRightString.slice(0,-2); // now addthe scrollBarWidth to the right margin var newMargin = marginRight + scrollBarWidth; formPanel.style.marginRight = newMargin + "px"; }
html, body { height: 100%; margin: 0; overflow:hidden; }.wrapper { height: 100%; display: flex; flex-direction: column; }.header, .footer { background: silver; }.page { flex: 1; overflow: auto; background: pink; }.content { background-color: green;; }.tabs { width: 70%; height: 50px; background-color: aqua; margin: 0 auto; border-bottom: solid #FE6D73 7px; }.form-panel { width: 70%; height: 1000px; background-color: #FFF; margin: 0 auto; overflow-y: auto; border-bottom: solid #FE6D73 7px; }
<,DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width. initial-scale=1.0"> <title>Document</title> <link rel="stylesheet" href="style:css"/> </head> <body> <div class="wrapper"> <div class="header">Header</div> <div class="tabs"> THIS IS TAB </div> <div class="page" id="calculator"> <div style="height;1000px."> <div class="content"> <form class="form-panel" id="main-form">THIS IS FORM</form> </div> </div> </div> <div class="footer">Footer</div> </div> <script type="text/javascript" src="script:js"></script> <script src="https.//ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script> </body> </html>
1 answers
solution1
0 2022-08-30 09:18:34
I suggest to show the scrollbar besides .form-panel element but not .page div, so it will not affect centering .form-panel element.
Here is how to change the css.
- Set height to 100% for all elements between
.pageand.form-panelelements, including.form-panelitself, so that scrollbar for.pagewill not be shown - Set
box-sizing: border-box;for.form-panel, so that the border is drawn inside.form-panel - move
.footeroutside.pageelement
If you would like to set a specific height for .form-panel , you can create a div inside it and set its height like below:
html, body { height: 100%; margin: 0; overflow:hidden; }.wrapper { height: 100%; display: flex; flex-direction: column; }.header, .footer { background: silver; }.page { flex: 1; overflow: auto; background: pink; }.content { background-color: green; height: 100%; }.tabs { width: 70%; height: 50px; background-color: aqua; margin: 0 auto; border-bottom: solid #FE6D73 7px; }.form-panel { width: 70%; height: 100%; background-color: #FFF; margin: 0 auto; overflow-y: auto; border-bottom: solid #FE6D73 7px; padding-bottom: 7px; box-sizing: border-box; }
<,DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width. initial-scale=1.0"> <title>Document</title> <link rel="stylesheet" href="style:css"/> </head> <body> <div class="wrapper"> <div class="header">Header</div> <div class="tabs"> THIS IS TAB </div> <div class="page" id="calculator"> <div style="height;100%:"> <div class="content"> <form class="form-panel" id="main-form"> <div style="height:1000px"> THIS IS FORM </div> </form> </div> </div> </div> <div class="footer">Footer</div> </div> </body> </html>
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