|
| 1 | +# Previous concepts |
| 2 | + |
| 3 | +## Overload |
| 4 | + |
| 5 | +Vamos a ver un simple ejemplo para entender como funciona overload. |
| 6 | + |
| 7 | +Creamos el siguiente _html_ |
| 8 | + |
| 9 | +```html |
| 10 | +<!DOCTYPE html> |
| 11 | +<html lang="en"> |
| 12 | +<head> |
| 13 | + <meta charset="UTF-8"> |
| 14 | + <meta http-equiv="X-UA-Compatible" content="IE=edge"> |
| 15 | + <meta name="viewport" content="width=device-width, initial-scale=1.0"> |
| 16 | + <title>Document</title> |
| 17 | + <link rel="stylesheet" type="text/css" href="./style.css" /> |
| 18 | +</head> |
| 19 | +<body> |
| 20 | + <div class="small-container"> |
| 21 | + Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into |
| 22 | + Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into |
| 23 | + </div> |
| 24 | + </body> |
| 25 | +</html> |
| 26 | +``` |
| 27 | + |
| 28 | +Y el css |
| 29 | + |
| 30 | +```css |
| 31 | +.small-container { |
| 32 | + width: 200px; |
| 33 | + height: 200px; |
| 34 | + border: 1px solid black; |
| 35 | +} |
| 36 | +``` |
| 37 | + |
| 38 | +Ahora vemos como el texto es mayor que el contenedor podemos jugar de varias formas. |
| 39 | + |
| 40 | +Primero ocultamos lo que sobresale del texto: |
| 41 | + |
| 42 | +```diff |
| 43 | +.small-container { |
| 44 | + width: 200px; |
| 45 | + height: 200px; |
| 46 | + border: 1px solid black; |
| 47 | ++ overflow: hidden; |
| 48 | +} |
| 49 | +``` |
| 50 | + |
| 51 | +Segundo mostramos scroll para que se pueda desplazar y ver todo el contenido: |
| 52 | + |
| 53 | +```diff |
| 54 | +.small-container { |
| 55 | + width: 200px; |
| 56 | + height: 200px; |
| 57 | + border: 1px solid black; |
| 58 | +- overflow: hidden; |
| 59 | ++ overflow: scroll; |
| 60 | +} |
| 61 | +``` |
| 62 | + |
| 63 | +Podemos hacer que aparezca el scroll solo si es necesario |
| 64 | + |
| 65 | +```diff |
| 66 | +.small-container { |
| 67 | + width: 200px; |
| 68 | + height: 200px; |
| 69 | + border: 1px solid black; |
| 70 | +- overflow: scroll; |
| 71 | ++ overflow: auto; |
| 72 | +} |
| 73 | +``` |
| 74 | + |
| 75 | +## Float |
| 76 | + |
| 77 | +Limpiamos el _html_ y partimos de este: |
| 78 | + |
| 79 | +```html |
| 80 | +<!DOCTYPE html> |
| 81 | +<html lang="en"> |
| 82 | + <head> |
| 83 | + <meta charset="UTF-8" /> |
| 84 | + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
| 85 | + <title>Document</title> |
| 86 | + <link href="./style.css" type="text/css" rel="stylesheet" /> |
| 87 | + </head> |
| 88 | + <body> |
| 89 | + <div class="container"> |
| 90 | + <img |
| 91 | + src="https://cdn.pixabay.com/photo/2020/04/13/13/27/animal-5038385_960_720.jpg" |
| 92 | + /> |
| 93 | + Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam eu |
| 94 | + fringilla neque, nec maximus magna. Integer facilisis ex massa, vel |
| 95 | + iaculis erat finibus in. Nunc sapien justo, fringilla luctus risus |
| 96 | + rhoncus, mollis aliquam est. Quisque cursus massa non arcu pulvinar |
| 97 | + ultricies. Morbi eget quam et ante tempor congue. Phasellus ac tortor leo. |
| 98 | + Suspendisse finibus rhoncus ipsum, at ultrices dui faucibus eget. Nunc |
| 99 | + mauris lectus, mattis vel ex eget, maximus consectetur orci. Morbi nulla |
| 100 | + est, pretium quis lobortis in, viverra a arcu. Vivamus vehicula nisl sed |
| 101 | + quam elementum faucibus. Vestibulum semper tristique lectus. Proin congue |
| 102 | + diam ut enim sagittis feugiat. Duis ornare tortor vel euismod accumsan. |
| 103 | + Etiam eu mauris ac nisl iaculis cursus. Sed bibendum elit sit amet |
| 104 | + suscipit sagittis. Nulla felis risus, auctor ut tellus pellentesque, |
| 105 | + pellentesque sollicitudin lacus. In dignissim bibendum erat nec |
| 106 | + pellentesque. Donec a ligula lacinia, laoreet tellus a, sagittis mauris. |
| 107 | + pretium. |
| 108 | + </div> |
| 109 | + </body> |
| 110 | +</html> |
| 111 | +``` |
| 112 | + |
| 113 | +Y creamos este css |
| 114 | + |
| 115 | +```css |
| 116 | +.container { |
| 117 | + border: 1px solid black; |
| 118 | + padding: 15px; |
| 119 | +} |
| 120 | + |
| 121 | +.container img { |
| 122 | + width: 245px; |
| 123 | + margin: 5px; |
| 124 | +} |
| 125 | +``` |
| 126 | + |
| 127 | +Ahora queremos que la imagen se situe a la izquierda del texto. Podemos usar la propiedad _float_ |
| 128 | + |
| 129 | +```diff |
| 130 | +.container { |
| 131 | + border: 1px solid black; |
| 132 | + padding: 15px; |
| 133 | +} |
| 134 | + |
| 135 | +.container img { |
| 136 | ++ float: left; |
| 137 | + width: 245px; |
| 138 | + margin: 5px; |
| 139 | +} |
| 140 | +``` |
| 141 | + |
| 142 | +Que pasa? La imagen queda fuera del contenedor. Como lo solucionamos? |
| 143 | + |
| 144 | +Primera aproximación modificamos el _html_ |
| 145 | + |
| 146 | +```diff |
| 147 | + <div class="container"> |
| 148 | + <img |
| 149 | + src="https://cdn.pixabay.com/photo/2020/04/13/13/27/animal-5038385_960_720.jpg" |
| 150 | + /> |
| 151 | + Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam eu |
| 152 | + fringilla neque, nec maximus magna. Integer facilisis ex massa, vel |
| 153 | + iaculis erat finibus in. Nunc sapien justo, fringilla luctus risus |
| 154 | + rhoncus, mollis aliquam est. Quisque cursus massa non arcu pulvinar |
| 155 | + ultricies. Morbi eget quam et ante tempor congue. Phasellus ac tortor leo. |
| 156 | + Suspendisse finibus rhoncus ipsum, at ultrices dui faucibus eget. Nunc |
| 157 | + mauris lectus, mattis vel ex eget, maximus consectetur orci. Morbi nulla |
| 158 | + est, pretium quis lobortis in, viverra a arcu. Vivamus vehicula nisl sed |
| 159 | + quam elementum faucibus. Vestibulum semper tristique lectus. Proin congue |
| 160 | + diam ut enim sagittis feugiat. Duis ornare tortor vel euismod accumsan. |
| 161 | + Etiam eu mauris ac nisl iaculis cursus. Sed bibendum elit sit amet |
| 162 | + suscipit sagittis. Nulla felis risus, auctor ut tellus pellentesque, |
| 163 | + pellentesque sollicitudin lacus. In dignissim bibendum erat nec |
| 164 | + pellentesque. Donec a ligula lacinia, laoreet tellus a, sagittis mauris. |
| 165 | + pretium. |
| 166 | ++ <div class="cleared"></div> |
| 167 | + </div> |
| 168 | +``` |
| 169 | + |
| 170 | +Y ahora le damos estilos a _cleared_ |
| 171 | + |
| 172 | +```diff |
| 173 | +... |
| 174 | ++.cleared { |
| 175 | ++ clear: both; |
| 176 | ++} |
| 177 | +``` |
| 178 | + |
| 179 | +No es elegante porque estamos mezclando responsabilidad. Introducimos un elemento html para solucionar un problema de css. |
| 180 | + |
| 181 | +Otra solucion, utilizar pseudolemento: |
| 182 | + |
| 183 | +```diff |
| 184 | + <div class="container"> |
| 185 | + <img |
| 186 | + src="https://cdn.pixabay.com/photo/2020/04/13/13/27/animal-5038385_960_720.jpg" |
| 187 | + /> |
| 188 | + Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam eu |
| 189 | + fringilla neque, nec maximus magna. Integer facilisis ex massa, vel |
| 190 | + iaculis erat finibus in. Nunc sapien justo, fringilla luctus risus |
| 191 | + rhoncus, mollis aliquam est. Quisque cursus massa non arcu pulvinar |
| 192 | + ultricies. Morbi eget quam et ante tempor congue. Phasellus ac tortor leo. |
| 193 | + Suspendisse finibus rhoncus ipsum, at ultrices dui faucibus eget. Nunc |
| 194 | + mauris lectus, mattis vel ex eget, maximus consectetur orci. Morbi nulla |
| 195 | + est, pretium quis lobortis in, viverra a arcu. Vivamus vehicula nisl sed |
| 196 | + quam elementum faucibus. Vestibulum semper tristique lectus. Proin congue |
| 197 | + diam ut enim sagittis feugiat. Duis ornare tortor vel euismod accumsan. |
| 198 | + Etiam eu mauris ac nisl iaculis cursus. Sed bibendum elit sit amet |
| 199 | + suscipit sagittis. Nulla felis risus, auctor ut tellus pellentesque, |
| 200 | + pellentesque sollicitudin lacus. In dignissim bibendum erat nec |
| 201 | + pellentesque. Donec a ligula lacinia, laoreet tellus a, sagittis mauris. |
| 202 | + pretium. |
| 203 | +- <div class="cleared"></div> |
| 204 | + </div> |
| 205 | +``` |
| 206 | + |
| 207 | +y el css |
| 208 | + |
| 209 | +```diff |
| 210 | +.container { |
| 211 | + border: 1px solid black; |
| 212 | + padding: 15px; |
| 213 | +} |
| 214 | + |
| 215 | ++.container::after { |
| 216 | ++ content: ""; |
| 217 | ++ display: block; |
| 218 | ++ clear: both; |
| 219 | ++} |
| 220 | + |
| 221 | +.container img { |
| 222 | + float: left; |
| 223 | + width: 245px; |
| 224 | + margin: 5px; |
| 225 | +} |
| 226 | + |
| 227 | +-.cleared { |
| 228 | +- clear: both; |
| 229 | +-} |
| 230 | +``` |
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