JSFiddle - React, Tailwind, and code Playground
HTML
<div class="main">
<div><h1>123nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><br>
<div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div>
<br>
<div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><br>
<div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><br>
<div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div><div><h1>nsldf
sfmslfm
fsdfmlsdf
sfmsdfsdlf
sdfsfomsfs
fslfslmflsdf
sfmsfdmsf
sfspfpsdf
sdfs,dpfsf
sdfls[dfks
dfsldfs
dfsl</h1></div>
</div>
CSS
html{
position:fixed;
}