css3 - CSS height: (x)vh viewport not scrollable -


this general css question height: vh variable. have page split 2 columns, column on left needs fixed (i.e doesn't scroll or move when page moves) , column on right needs scroll indefinitely (i.e normal page would. here's screenshot illustration:

img01

presuming start both sides of page being scrollable have given left column id #profilecol added following css in order fix left section of page height of browser window:

#profilecol {     z-index: 999!important;     height: 100vh!important; }

update: have page scrolling both sides scroll, attempt add position:fixed either column fries structure of page places 1 container on top of other.

does know why isn't working?

you can achive requirement 

.left-col{    position:fixed;    height:100vh; } .right-col{    height:100vh;    overflow:auto; }

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