Counter: https://100dayscss.com/?dayIndex=31
Gallery v1: https://100dayscss.com/?dayIndex=39
Gallery v2: https://100dayscss.com/?dayIndex=12
Notification: https://100dayscss.com/?dayIndex=25
A Noice Modal: https://codepen.io/ainalem/pen/OJRLRPO
Autocomplete: https://100dayscss.com/?dayIndex=28
Bulb hover: https://100dayscss.com/?dayIndex=42
Smooth Scroll: https://codepen.io/jshikanova/pen/gOWYzXY
Pixel Draw: https://100dayscss.com/?dayIndex=46
Follow mouse: https://100dayscss.com/?dayIndex=48
Cool selection: https://codepen.io/havardob/pen/BapJYMg
Simple hover (easy): https://codepen.io/argyleink/pen/poEjvpd
Modal from basge (easy-medium): https://codepen.io/ainalem/pen/RqYZNO
Sliding Tabs (easy-medium): https://codepen.io/havardob/pen/ExVaELV
Product page (medium): https://codepen.io/ig_design/full/eYJbaRB
Custom Checkboxes (medium): https://codepen.io/havardob/pen/BapJYMg
Task manager UI only (easy-medium): https://codepen.io/aybukeceylan/pen/gOpbRPO
Different Button Effects (medium): https://codepen.io/yuhomyan/pen/OJMejWJ
Toggles (medium): https://codepen.io/oliviale/pen/xxboXzo
Slider (medium): https://100dayscss.com/?dayIndex=52
Transactions UI (medium): https://codepen.io/knyttneve/details/NWRWQeB
Login/Signup (medium): https://codepen.io/ig_design/pen/KKVQpVP
Nice form (medium-hard): https://codepen.io/ig_design/pen/dLNKgM
Cool dropdown (medium-hard): https://codepen.io/flavio_amaral/pen/xxqQLoa
Checklist Animation (hard): https://codepen.io/milanraring/pen/QWbqBGo
Tabs (hard): https://codepen.io/flavio_amaral/pen/xxgYGrR
Photography Portfolio (hard): https://codepen.io/ig_design/pen/JxbVRq
Cool AF Clock (hard): https://codepen.io/borntofrappe/pen/qGozVM
Custom Audio Player (GOD): https://css-tricks.com/lets-create-a-custom-audio-player/