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https://github.com/comehope/front-end-daily-challenges
Define dom, only 1 element:
<div></div>
Centered display:
body { margin: 0; height: 100vh; display: flex; align-items: center; justify-content: center; background-color: teal; }
Draw a wooden bar:
.loader { width: 6em; border-bottom: 0.25em solid white; font-size: 30px; border-radius: 0.125em; }
Use pseudo elements to draw a box on it:
.loader { position: relative; } .loader::before { content: ''; position: absolute; width: 1em; height: 1em; border: 0.25em solid white; bottom: 0; left: 0.5em; border-radius: 0.25em; }
Let the pattern tilt to form the effect of a box on a slope:
.loader { transform: rotate(-45deg); left: 1em; top: 1em; }
Next make the animation.
Let the box climb up the slope step by step, climb to the top of the slope and then climb again:
.loader::before { animation: push 3s infinite; } @keyframes push { 0% { transform: translateX(0); } 20%, 25% { transform: translateX(1em); } 40%, 45% { transform: translateX(2em); } 60%, 65% { transform: translateX(3em); } 80% { transform: translateX(0); } }
Increase the rolling effect of the box during the climb:
@keyframes push { 0% { transform: translateX(0) rotate(0deg); } 20%, 25% { transform: translateX(1em) rotate(calc(90deg * 1)); } 40%, 45% { transform: translateX(2em) rotate(calc(90deg * 2)); } 60%, 65% { transform: translateX(3em) rotate(calc(90deg * 3)); } 80% { transform: translateX(0) rotate(0deg); } }
Increase the box's Anthropomorphic effect during climbing:
@keyframes push { 0% { transform: translateX(0) rotate(0deg); } 5% { transform: translateX(0) rotate(-5deg); } 20%, 25% { transform: translateX(1em) rotate(calc(90deg * 1 + 5deg)); } 30% { transform: translateX(1em) rotate(calc(90deg * 1 - 5deg)); } 40%, 45% { transform: translateX(2em) rotate(calc(90deg * 2 + 5deg)); } 50% { transform: translateX(2em) rotate(calc(90deg * 2 - 5deg)); } 60%, 65% { transform: translateX(3em) rotate(calc(90deg * 3 + 5deg)); } 70% { transform: translateX(3em) rotate(calc(90deg * 3 - 5deg)); } 80% { transform: translateX(0) rotate(-5deg); } }
Let the wooden bar perform a throwing action when the box climbs close to the top:
.loader { animation: throw 3s infinite; transform-origin: 20%; } @keyframes throw { 0%, 70%, 100% { transform: rotate(-45deg); } 80% { transform: rotate(-135deg); } }
Increase the falling effect of the box when it climbs close to the top:
@keyframes push { 70% { transform: translateX(3em) translateY(0) rotate(calc(90deg * 3 - 5deg)) scale(1); filter: opacity(1); } 80% { transform: translateX(0) translateY(-5em) rotate(-5deg) scale(0); filter: opacity(0.5); } 90% { transform: translateX(0) translateY(0) rotate(0deg) scale(0); } }
Finally, hide the parts that may exceed the page:
body { overflow: hidden; }
You’re done!
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