1. Buka Blogger
2. Klik lay out, terus klik edit html.
3. Cari kode ]]>, nanti akan ketemu kode ]]></b:skin>
4. Taruh script berikut di atas kode ]]></b:skin>
::-webkit-scrollbar{height:10px;overflow:visible;width:10px}
::-webkit-scrollbar-button{height:0;width:0}
::-webkit-scrollbar-track{background-clip:padding-box;border:solid transparent;border-width:0 0 0 1px}
::-webkit-scrollbar-track:hover{background-color:rgba(0,0,0,.05);box-shadow:inset 1px 0 0 rgba(0,0,0,.1)}
::-webkit-scrollbar-track:active{background-color:rgba(0,0,0,.05);box-shadow:inset 1px 0 0 rgba(0,0,0,.14),inset -1px 0 0 rgba(0,0,0,.07)}
::-webkit-scrollbar-thumb{background-color:rgba(0,0,0,.2);background-clip:padding-box;border:solid transparent;border-width:1px 1px 1px 1px;min-height:28px;padding:100px 0 0;box-shadow:inset 1px 1px 0 rgba(0,0,0,.1),inset 0 -1px 0 rgba(0,0,0,.07)}
::-webkit-scrollbar-thumb:hover{background-color:rgba(0,0,0,.4);box-shadow:inset 1px 1px 1px rgba(0,0,0,.25)}
::-webkit-scrollbar-thumb:active{background-color:rgba(0,0,0,0.5);box-shadow:inset 1px 1px 3px rgba(0,0,0,0.35)}
::-webkit-scrollbar-corner{background:transparent;}
body::-webkit-scrollbar{height:12px;overflow:visible;width:12px}
body::-webkit-scrollbar-track-piece{background-clip:padding-box;background-color:#f5f5f5;border:solid #fff;border-width:0 0 0 0px;box-shadow:inset 1px 0 0 rgba(0,0,0,.14),inset -1px 0 0 rgba(0,0,0,.07)}
body::-webkit-scrollbar-thumb{border-width:1px 1px 1px 1px;margin:0 0 0 1px;}
body::-webkit-scrollbar-corner{background-color:#f5f5f5;}
5. Save
NB: Bisa diganti sesuai keinginan, dan hanya work pada Google Chrome.