Is CSS a PL? Can you write algorithms in CSS?

10. What is A Programming Language? By Will Chrichton

16. Link to the Tweet.

52. Wikipedia

55. WolframMathWorld

56. WolframMathWorld

57. WolframMathWorld

58. WolframMathWorld

59. input:checked + input:not(:checked) + input:not(:checked) + * {
/* Style fourth cell to prompt human to change state */
}
if ( cellOne == 1 && cellTwo == 0 && cellThree == 0 ) {
cellFour = 1;
}

60. Rule 110 in CSS/HTML/Human

62. Accidentally Turing Complete by Andreas Zwinkau

72. .square {
width: 100px;
height: 100px;
background-color: blue;
}
<div class="square"></div>

73. <div class="square"></div>
.square--bigger {
width: 150px;
height: 150px;
}
.square--smaller {
width: 50px;
height: 50px;
}
<div class="square square--bigger"></div>
<div class="square square--smaller"></div>
.square {
width: 100px;
height: 100px;
background-color: blue;
}

74. <div class="square"></div>.square {
width: 100px;
height: 100px;
background-color: blue;
}

75. <div class="box"></div>.square {
--square-size: 100px;
width: var( --square-size );
height: var( --square-size );
background-color: blue;
}
<div class="square"></div>

76. .square--smaller {
--square-size: 50px;
}
.square--bigger {
--square-size: 150px;
}
<div class="square"></div>
<div class="square square--bigger"></div>
<div class="square square--smaller"></div>
.square {
--square-size: 100px;
width: var( --square-size );
height: var( --square-size );
background-color: blue;
}

78. .square {
...
}
<div class="square"></div>
.square--smaller {
--square-size: 50px;
}
.square--bigger {
--square-size: 150px;
}
<div class="square square--bigger"></div>
<div class="square
square--smaller
square--rounded"></div>
<div class="square square--smaller"></div>
.square--rounded {
border-radius: 50%;
}

80. .square--rounded {
border-radius: 50%;
}
.square {
...
}
<div class="square"></div>
<div class="square
square--rounded
square--bigger
square--yellow"></div>
.square--yellow {
background-color: yellow;
}
.square--bigger {
--square-size: 150px;
}

81. .square {
--square-size: 100px;
--square-bg-color: blue;
...
background-color: var( --square-bg-color );
}
.square--yellow {
--square-bg-color: yellow;
}
<div class="square"></div>
<div class="square
square--rounded
square--yellow"></div>
.square--rounded { ... }
.square--bigger { ... }

83. <div class="square"></div>.square {
--square-size: 100px;
--square-bg-color: blue;
width: var( --square-size );
height: var( --square-size );
background-color: var( --square-bg-color );
}

84. <div class="shape"></div>.shape {
--shape-height: 100px;
--shape-width: 100px;
--shape-bg-color: blue;
width: var( --shape-width );
height: var( --shape-height );
background-color: var( --shape-bg-color );
}

85. .shape { ... }
.shape--smaller {
--shape-height: 50px;
--shape-width: 50px;
}
.shape--bigger {
--shape-height: 150px;
--shape-width: 150px;
}
<div class="shape shape--bigger"></div>
<div class="shape shape--smaller"></div>
<div class="shape
shape--rounded
shape--bigger
shape--yellow"></div>
.shape--yellow { ... }
.shape--rounded { ... }
<div class="shape"></div>

86. <div class="shape shape--big-square"></div>
<div class="shape shape--small-square"></div
<div class="shape
shape--rounded
shape--big-square
shape--yellow"></div>
.shape { ... }
.shape--small-square {
--shape-height: 50px;
--shape-width: 50px;
}
.shape--big-square {
--shape-height: 150px;
--shape-width: 150px;
}
.shape--yellow { ... }
.shape--rounded { ... }
<div class="shape"></div>

87. .shape--small-square { ... }
<div class="shape shape--big-square"></div>
<div class="shape shape--small-square"></div
.shape--rectangle {
--shape-height: 50px;
--shape-width: 100px;
}
<div class="shape shape--rectangle"></div>
<div class="shape
shape--rounded
shape--big-square
shape--yellow"></div>
.shape--yellow { ... }
.shape--rounded { ... }
.shape { ... }
.shape--big-square { ... }
<div class="shape"></div>

88. .shape--rounded {
border-radius: 50%;
}
<div class="shape shape--big-square"></div>
<div class="shape shape--small-square"></div
<div class="shape
shape--rounded
shape--big-square
shape--yellow"></div>
<div class="shape shape--rectangle"></div>
<div class="shape"></div>
.shape--small-square { ... }
.shape--rectangle { ... }
.shape--yellow { ... }
.shape { ... }
.shape--big-square { ... }

89. <div class="shape shape--big-square"></div>
<div class="shape shape--small-square"></div
<div class="shape
shape--rectangle
shape--rounded"></div>
<div class="shape
shape--circle
shape--big-square
shape--yellow"></div>
.shape--rounded {
border-radius: 20px;
}
.shape--circle {
border-radius: 50%;
}
.shape--rectangle { ... }
<div class="shape"></div>
.shape--small-square { ... }
.shape--yellow { ... }
.shape { ... }
.shape--big-square { ... }

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91. <div class="shape shape--big-square"></div>
<div class="shape shape--small-square"></div
.shape { ... }
.shape--small-square { ... }
.shape--big-square { ... }
.shape--yellow { ... }
.shape--circle { ... }
.shape--rounded { ... }
<div class="shape
shape--rounded-rectangle"></div>
<div class="shape
shape--circle
shape--big-square
shape--yellow"></div>
<div class="shape"></div>
.shape--has-text {
--shape-height: initial;
--shape-width: initial;
}
.shape__text {
color: white;
font-size: 16px;
}
<button class="shape shape--has-text">
<a href="" class="shape__text"></a>
</button>

92. Sign Up For Our Newsletter 📝 Sign Up For Our Newsletter

93. <div class="shape shape--big-square"></div>
<div class="shape shape--small-square"></div
.shape { ... }
.shape--small-square { ... }
.shape--big-square { ... }
.shape--yellow { ... }
.shape--circle { ... }
.shape--rounded-rectangle { ... }
<div class="shape
shape--rounded-rectangle"></div>
<div class="shape
shape--circle
shape--big-square
shape--yellow"></div>
<div class="shape"></div>
.shape--has-text {
--shape-height: initial;
--shape-width: initial;
}
.shape__text {
color: white;
font-size: 16px;
}
<button class="shape shape--has-text">
<a href="" class="shape__text"></a>
</button>

99. Robert C. Martin in The Future of Programming

103. .square {
width: 100px;
height: 100px;
background-color: blue;
}
<div class="square"></div>

104. <div class="shape"></div>.shape {
--shape-height: 100px;
--shape-width: 100px;
--shape-bg-color: blue;
width: var( --shape-width );
height: var( --shape-height );
background-color: var( --shape-bg-color );
}

122. function sort(array) {
for (let i = 0; i < array.length; i++) {
for (let ii = 0; ii < array.length; ii++) {
if (array[ii] > array[ii+1]) {
let temp = array[ii];
array[ii] = array[ii+1];
array[ii+1] = temp;
}
}
}
return array;
}
var sorted = sort([4, 2, 1, 3]);

123. function sort(array) {
for (let i = 0; i < array.length; i++) {
for (let ii = 0; ii < array.length; ii++) {
if (array[ii] > array[ii+1]) {
let temp = array[ii];
array[ii] = array[ii+1];
array[ii+1] = temp;
}
}
}
return array;
}
var sorted = sort([4, 2, 1, 3]);

126. .container {
display: flex;
}

127. .container {
display: flex;
flex-wrap: wrap;
}

128. fn get_flex_line(&mut self, container_size: Au) -> Option<FlexLine> {
...
for item in items {
let kid = children.get(item.index);
item.init_sizes(kid, container_size, self.main_mode);
let outer_main_size = item.outer_main_size(kid, self.main_mode);
if total_line_size + outer_main_size > container_size &&
end != start &&
self.is_wrappable
{
break;
}
}
...
}
// Flex in Servo
// https://github.com/servo/servo/blob/master/components/layout/flex.rs

131. .container {
display: flex;
flex-wrap: wrap;
}

139. .clearfix::before,
.clearfix::after {
content: "";
display: table;
}
.clearfix::after {
clear: both;
}

140. .relative-parent {
position: relative;
}
.child-stuck-to-bottom-right-of-closest-relative-parent {
position: absolute;
right: 0;
bottom: 0;
}

141. .spaced-content > * + * {
margin-top: 1rem;
}

142. h1 {
font-size: calc( 2rem + 3vw );
}
// Stops growing at 800px
@media( min-width: 800px ) {
h1 {
font-size: calc( 2rem + ( 800px * ( 3 / 100 ) ) );
}
}

143. .grid {
display: grid;
grid-template-columns: repeat( var( --grid-cols, 1 ), 1fr );
}
.grid-cols3 {
--grid-cols: 3;
}
.grid-cols4 {
--grid-cols: 4;
}
.grid-item-span2 {
grid-column: span 2;
}

158. .lrv-a-glue-parent {
position: relative;
}
.lrv-a-glue {
// Fallback is top left for IE11.
top: 0;
left: 0;
position: absolute;
z-index: $z-index-middle-bottom;
top: var( --a-glue-top, initial );
bottom: var( --a-glue-bottom, initial );
right: var( --a-glue-right, initial );
left: var( --a-glue-left, initial );
}
.lrv-a-glue--r-0 {
--a-glue-right: 0;
}
.relative-parent {
position: relative;
}
.child-stuck-to-bottom… {
position: absolute;
right: 0;
bottom: 0;
}

160. .space-content > * + * {
margin-top: 1rem;
}
.lrv-a-space-children-horizontal > * + * {
margin-left: $spacer-050; // Fallback.
margin-left: var( --a-space-children-spacer );
}
@supports( column-gap: 1rem ) {
.lrv-a-space-children-horizontal {
column-gap: var( --a-space-children-spacer );
}
.lrv-a-space-children-horizontal > * {
margin-left: unset;
}
}

187. div {
counter-reset: fizzbuzz;
counter-increment: fizzbuzz;
}
div::before {
content: counter(fizzbuzz);
}
div:nth-child(3n)::before {
content: 'Fizz';
}
div:nth-child(5n)::after {
content: 'Buzz';
}
Full FizzBuzz in CSS/HTML CodePen