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Last Updated : 24 May, 2023
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We have all seen that developers sometimes set z-index values to 999, 99999, etc to ensure that an element always remains on top.
In this article, we will discuss the maximum and minimum values for the CSS z-index property.
z-index: It is the CSS property that defines the stack level of positioned elements in the current stacking context i.e. elements with a smaller z-index are covered by elements with a larger z-index.
- The keyword auto or an <integer> is used to set the z-index property.
- Elements with any position besides static are affected by the z-index.
The maximum and minimum value for the z-index in most browsers is limited to a signed 32-bit value i.e. from −2147483648 to +2147483647.
Example: In this example, we will see the maximum and minimum values for the z-index.
HTML
<!DOCTYPE html><html><head><style>.container {position: relative;}See AlsoThe CSS z-index Property: What You Need to KnowLayering IFrames using positioning and z-indexW3Schools.comW3Schools.com.box1 {background-color: green;position: absolute;z-index: -1;height: 200px;width: 200px;}.box2 {background-color: blue;position: absolute;left: 50px;z-index: 0;height: 100px;width: 300px;}.box3 {background-color: red;position: absolute;left: 150px;top: 50px;z-index: 1;height: 120px;width: 250px;}</style></head><body><h2style="color:green">GeeksforGeeks</h2><b><p>max and min value of z-index</p></b><divclass='container'><divclass='box1'></div><divclass='box2'></div><divclass='box3'></div></div></body></html>Output:
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'); $('.spinner-loading-overlay').show(); jQuery.ajax({ url: writeApiUrl + 'create-improvement-post/?v=1', type: "POST", contentType: 'application/json; charset=utf-8', dataType: 'json', xhrFields: { withCredentials: true }, data: JSON.stringify({ gfg_id: post_id, check: true }), success:function(result) { jQuery.ajax({ url: writeApiUrl + 'suggestions/auth/' + `${post_id}/`, type: "GET", dataType: 'json', xhrFields: { withCredentials: true }, success: function (result) { $('.spinner-loading-overlay:eq(0)').remove(); var commentArray = result; if(commentArray === null || commentArray.length === 0) { // when no reason is availaible then user will redirected directly make the improvment. // call to api create-improvement-post $('body').append('
'); $('.spinner-loading-overlay').show(); jQuery.ajax({ url: writeApiUrl + 'create-improvement-post/?v=1', type: "POST", contentType: 'application/json; charset=utf-8', dataType: 'json', xhrFields: { withCredentials: true }, data: JSON.stringify({ gfg_id: post_id, }), success:function(result) { $('.spinner-loading-overlay:eq(0)').remove(); $('.improve-modal--overlay').hide(); $('.unlocked-status--improve-modal-content').css("display","none"); $('.create-improvement-redirection-to-write').attr('href',writeUrl + 'improve-post/' + `${result.id}` + '/', '_blank'); $('.create-improvement-redirection-to-write')[0].click(); }, error:function(e) { $('.spinner-loading-overlay:eq(0)').remove(); var result = e.responseJSON; if(result.detail.non_field_errors.length){ $('.improve-modal--improve-content .improve-modal--improve-content-modified').text(`${result.detail.non_field_errors}.`); jQuery('.improve-modal--overlay').show(); jQuery('.improve-modal--improvement').show(); $('.locked-status--impove-modal').css("display","block"); $('.unlocked-status--improve-modal-content').css("display","none"); $('.improve-modal--improvement').attr("status","locked"); $('.improvement-reason-modal').hide(); } }, }); return; } var improvement_reason_html = ""; for(var comment of commentArray) { // loop creating improvement reason list markup var comment_id = comment['id']; var comment_text = comment['suggestion']; improvement_reason_html += `
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