How to use pure CSS to achieve an overhead view of a football field (source code attached)-CSS Tutorial-php.cn

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How to use pure CSS to achieve an overhead view of a football field (source code attached)

Source code download

https://github.com/comehope/front-end-daily-challenges

Code Interpretation

Define dom, the container contains the field, and the field contains elements such as the center line, midpoint, center circle, penalty area, penalty kick point, penalty kick arc, goal area, corner kick area, etc.:

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Centered display:

body { margin: 0; height: 100vh; display: flex; align-items: center; justify-content: center; background: radial-gradient(sandybrown, maroon); }

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Define container size:

.container { width: 120em; height: 80em; background-color: green; font-size: 5px; } .container span { display: block; }

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Define line type:

.container { --line: 0.3em solid white; }

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Draw the sideline of the field:

.container { padding: 5em; } .field { width: inherit; height: inherit; border: var(--line); }

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Draw the center line :

.halfway-line { width: calc(120em / 2); height: 80em; border-right: var(--line); }

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Draw the center circle:

.field { position: relative; } .centre-circle { width: 20em; height: 20em; border: var(--line); border-radius: 50%; position: absolute; top: calc((80em - 20em) / 2); left: calc((120em - 20em - 0.3em) / 2); }

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Draw the midpoint:

.centre-mark { width: 2em; height: 2em; background-color: white; border-radius: 50%; position: absolute; top: calc(80em / 2 - 1em); left: calc(120em / 2 - 1em + 0.3em / 2); }

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Draw the penalty area:

.penalty-area { width: 18em; height: 44em; border: var(--line); position: absolute; top: calc((80em - 44em) / 2); left: -0.3em; }

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Draw the penalty spot:

.penalty-mark { width: 2em; height: 2em; background-color: white; border-radius: 50%; position: absolute; top: calc(80em / 2 - 1em); left: calc(12em - 1em); }

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Draw the penalty arc:

.penalty-arc { width: 20em; height: 20em; border: var(--line); border-radius: 50%; position: absolute; top: calc((80em - 20em) / 2); left: calc(12em - 20em / 2); }

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Hide the left arc of the penalty arc, leaving only the right arc:

.field { z-index: 1; } .penalty-area { background-color: green; } .penalty-arc { z-index: -1; }

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Draw the goal area:

.goal-area { width: 6em; height: 20em; border: var(--line); position: absolute; top: calc((80em - 20em) / 2); left: -0.3em; }

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Draw the corner area:

.field { overflow: hidden; } .corner-arc::before, .corner-arc::after { content: ''; position: absolute; width: 5em; height: 5em; border: 0.3em solid white; border-radius: 50%; --offset: calc(-5em / 2 - 0.3em); left: var(--offset); } .corner-arc::before { top: var(--offset); } .corner-arc::after { bottom: var(--offset); }

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Copy the sub-elements in the dom, one copy on each side:

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The style on the right side is the same as the left side, only horizontal Just flip it over:

.right { position: absolute; top: 0; left: 50%; transform: rotateY(180deg); }

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You're done!

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