javascript - Fixed element not being centered by jquery on Safari -

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i have 3 elements supposed centered jquery upon page load. currently, 2 of elements centered correctly safari on desktop , mobile. #pulse_ball element not being positioned correctly; gets left style of -0.5px reason. after resize, however, 3 elements centered correctly. (on iphone) in portrait mode elements centered correctly after scroll, not in landscape mode.

jsfiddle example

css #pulse_ball:

#pulse_ball {     display: block;     position: fixed;     left: calc(50% - 27px);     z-index: 25;     top: 48%; }

css #center_line:

#center_line {     width: 3px;     background: #dbdbdb;     margin: 0 auto;     position: fixed;     z-index: 0; }

css #arrow_down:

#arrow_down {     display: block;     width: 64px;     position: fixed;     bottom: 10%;     left: calc(50% - 32px); }

js code:

centeritems();  $(window).resize(function() {     centeritems(); });  function centeritems() {     $("#center_line").height($("body").height());     $("#center_line").offset({left: ($("body").width() / 2) - 1});     $("#pulse_ball").offset({left: ($("body").width() / 2) - ($("#pulse_ball").width() / 2)});     $("#arrow_down").offset({left: ($("body").width() / 2) - ($("#arrow_down").width() / 2)}); }

seems css calc() problem, try setting left: 50% #pulse_ball elememnt. here fork working.


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