Created
November 27, 2020 08:56
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Style checkbox element. CSS-only. No extra tags or classes required.
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| // Don't forget to enable autoprefixer. | |
| // The escape-svg() function and checkmark SVG are taken from Bootstrap. | |
| $escaped-characters: ( | |
| ('<', '%3c'), | |
| ('>', '%3e'), | |
| ('#', '%23'), | |
| ('(', '%28'), | |
| (')', '%29') | |
| ) !default; | |
| @function str-replace($string, $search, $replace: "") { | |
| $index: str-index($string, $search); | |
| @if $index { | |
| @return str-slice($string, 1, $index - 1) + $replace + str-replace(str-slice($string, $index + str-length($search)), $search, $replace); | |
| } | |
| @return $string; | |
| } | |
| @function escape-svg($string) { | |
| @if str-index($string, "data:image/svg+xml") { | |
| @each $char, $encoded in $escaped-characters { | |
| // Do not escape the url brackets | |
| @if str-index($string, "url(") == 1 { | |
| $string: url("#{str-replace(str-slice($string, 6, -3), $char, $encoded)}"); | |
| } @else { | |
| $string: str-replace($string, $char, $encoded); | |
| } | |
| } | |
| } | |
| @return $string; | |
| } | |
| $checkbox-unchecked-background: #fff; | |
| $checkbox-checked-background: #0098ff; | |
| $checkbox-checkmark-color: #fff; | |
| $checkbox-checkmark-image: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'><path fill='#{$checkbox-checkmark-color}' d='M6.564.75l-3.59 3.612-1.538-1.55L0 4.26l2.974 2.99L8 2.193z'/></svg>"); | |
| $checkbox-focus-shadow: 0 0 0 0.2rem rgba($checkbox-checked-background, 0.5); | |
| input[type=checkbox] { | |
| position: relative; | |
| width: 1.5rem; | |
| height: 1.5rem; | |
| vertical-align: middle; | |
| margin: 0 0.5rem 0 0; | |
| appearance: none; | |
| background-color: $checkbox-unchecked-background; | |
| outline: none; | |
| border-radius: 0; | |
| &:after { | |
| content: ' '; | |
| position: absolute; | |
| left: 0; | |
| top: 0; | |
| right: 0; | |
| bottom: 0; | |
| background: $checkbox-checked-background escape-svg($checkbox-checkmark-image) no-repeat center center; | |
| background-size: 50%; | |
| opacity: 0; | |
| transition: opacity .15s ease-in-out; | |
| } | |
| &:checked:after { | |
| opacity: 1; | |
| } | |
| &:focus { | |
| outline: none; | |
| box-shadow: $checkbox-focus-shadow; | |
| } | |
| } |
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