Implementando “Facebook Reactions” con CSS 3

3 minuto(s)

En esta página:

Demo Github
- Implementando Facebook Reactions

Demo Github

Facebook lanzo a principios del año 2016 “Reactions”, el cual ofrece nuevas formas de interactuar con las publicaciones en el Timelime de Facebook. Esta característica hace que el usuario pueda reaccionar según sea su interés, las reacciones principales son, Me gusta, Me encanta, Me divierte, Me asombra, Me entristece, y Me enoja, quizás Facebook decide agregar mas reacciones, pero por ahora es lo que nos brinda. En este tutorial para desarrolladores vamos a implementar Facebook reactions con CSS 3.

Implementando Facebook Reactions

Colocamos antes de cerrar la etiqueta </head> el archivo estilos.css:


<link href="estilos.css" rel="stylesheet" type="text/css" />

Creamos nuestro archivo estilos.css

estilos.css


.text-desc, [class*="reaction-"], .field-reactions, .field-reactions:checked:focus ~ .text-desc {
  clip: rect(1px, 1px, 1px, 1px);
  overflow: hidden;
  position: absolute;
  top: 0;
  left: 0;
}

.field-reactions:focus ~ .text-desc, .box:hover [class*="reaction-"], .field-reactions:checked ~ [class*="reaction-"] {
  clip: auto;
  overflow: visible;
  opacity: 1;
}

.main-title {
  background: #3a5795;
  padding: 10px;
  color: #fff;
  text-align: center;
  font-size: 16px;
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.text-desc {
  font-weight: normal;
  text-align: center;
  transform: translateY(-50px);
  white-space: nowrap;
  font-size: 13px;
  width: 100%;
}

[class*="reaction-"] {
  border: none;
  background-image: url(../img/icons.png);
  background-color: transparent;
  display: block;
  cursor: pointer;
  height: 48px;
  position: absolute;
  width: 48px;
  z-index: 11;
  top: -28;
  transform-origin: 50% 100%;
  transform: scale(0.1);
  transition: all 0.3s;
  outline: none;
  will-change: transform;
  opacity: 0;
}

.box {
  position: absolute;
  left: calc(50% - 150px);
  top: calc(37% - 50px);
  width: 300px;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9;
  visibility: hidden;
}

.field-reactions:focus ~ .label-reactions {
  border-color: rgba(88, 144, 255, 0.3);
}
.field-reactions:checked:focus ~ .label-reactions {
  border-color: transparent;
}

.label-reactions {  
  border: 2px dotted transparent;
  display: block;
  margin: 0 auto;
  width: 100px;
  color: transparent;
  cursor: pointer;
  font-size: 12px;
  color: #7f7f7f;
}

.toolbox {
  background: #fff;
  height: 52px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08), 0 2px 2px rgba(0, 0, 0, 0.15);
  width: 300px;
  border-radius: 40px;
  top: -30px;
  left: 0;
  position: absolute;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.15s;
}

.legend-reaction {
  background: rgba(0, 0, 0, 0.75);
  border-radius: 10px;
  box-sizing: border-box;
  color: #fff;
  display: inline-block;
  font-size: 11px;
  text-overflow: ellipsis;
  font-weight: bold;
  line-height: 20px;
  max-width: 850%;
  width: 90px;
  opacity: 0;
  overflow: hidden;
  padding: 0 6px;
  transition: opacity 50ms ease;
  left: 50%;
  position: absolute;
  text-align: center;
  top: -28px;
  transform: translateX(-50%);
}

.box:hover [class*="reaction-"] {
  transform: scale(0.8) translateY(-40px);
}
.box:hover [class*="reaction-"]:hover, .box:hover [class*="reaction-"]:focus {
  transition: all 0.2s ease-in;
  transform: scale(1) translateY(-35px);
}
.box:hover [class*="reaction-"]:hover .legend-reaction, .box:hover [class*="reaction-"]:focus .legend-reaction {
  opacity: 1;
}
.box:hover .toolbox {
  opacity: 1;
}
.box:hover .toolbox {
  visibility: visible;
}
.box:hover .reaction-love {
  transition-delay: 0.03s;
}
.box:hover .reaction-haha {
  transition-delay: 0.09s;
}
.box:hover .reaction-wow {
  transition-delay: 0.12s;
}
.box:hover .reaction-sad {
  transition-delay: 0.15s;
}
.box:hover .reaction-angry {
  transition-delay: 0.18s;
}

.field-reactions:checked ~ [class*="reaction-"] {
  transform: scale(0.8) translateY(-40px);
}
.field-reactions:checked ~ [class*="reaction-"]:hover, .field-reactions:checked ~ [class*="reaction-"]:focus {
  transition: all 0.2s ease-in;
  transform: scale(1) translateY(-35px);
}
.field-reactions:checked ~ [class*="reaction-"]:hover .legend-reaction, .field-reactions:checked ~ [class*="reaction-"]:focus .legend-reaction {
  opacity: 1;
}
.field-reactions:checked ~ .toolbox {
  opacity: 1;
}
.field-reactions:checked ~ .toolbox,
.field-reactions:checked ~ .overlay {
  visibility: visible;
}
.field-reactions:checked ~ .reaction-love {
  transition-delay: 0.03s;
}
.field-reactions:checked ~ .reaction-haha {
  transition-delay: 0.09s;
}
.field-reactions:checked ~ .reaction-wow {
  transition-delay: 0.12s;
}
.field-reactions:checked ~ .reaction-sad {
  transition-delay: 0.15s;
}
.field-reactions:checked ~ .reaction-angry {
  transition-delay: 0.18s;
}

.reaction-like {
  left: 0;
  background-position: 0 -144px;
}

.reaction-love {
  background-position: 0 -192px;
  left: 50px;
}

.reaction-haha {
  background-position: 0 -96px;
  left: 100px;
}

.reaction-wow {
  background-position: 0 -288px;
  left: 150px;
}

.reaction-sad {
  background-position: 0 -240px;
  left: 200px;
}

.reaction-angry {
  left: 250px;
}

.footer {
  padding-top: 105px;
}

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.text-desc, [class*="reaction-"], .field-reactions, .field-reactions:checked:focus ~ .text-desc {

clip: rect(1px, 1px, 1px, 1px);

overflow: hidden;

position: absolute;

top: 0;

left: 0;

}

.field-reactions:focus ~ .text-desc, .box:hover [class*="reaction-"], .field-reactions:checked ~ [class*="reaction-"] {

clip: auto;

overflow: visible;

opacity: 1;

}

.main-title {

background: #3a5795;

padding: 10px;

color: #fff;

text-align: center;

font-size: 16px;

text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);

}

.text-desc {

font-weight: normal;

text-align: center;

transform: translateY(-50px);

white-space: nowrap;

font-size: 13px;

width: 100%;

}

[class*="reaction-"] {

border: none;

background-image: url(../img/icons.png);

background-color: transparent;

display: block;

cursor: pointer;

height: 48px;

position: absolute;

width: 48px;

z-index: 11;

top: -28;

transform-origin: 50% 100%;

transform: scale(0.1);

transition: all 0.3s;

outline: none;

will-change: transform;

opacity: 0;

}

.box {

position: absolute;

left: calc(50% - 150px);

top: calc(37% - 50px);

width: 300px;

}

.overlay {

position: fixed;

top: 0;

left: 0;

right: 0;

bottom: 0;

z-index: 9;

visibility: hidden;

}

.field-reactions:focus ~ .label-reactions {

border-color: rgba(88, 144, 255, 0.3);

}

.field-reactions:checked:focus ~ .label-reactions {

border-color: transparent;

}

.label-reactions {

border: 2px dotted transparent;

display: block;

margin: 0 auto;

width: 100px;

color: transparent;

cursor: pointer;

font-size: 12px;

color: #7f7f7f;

}

.toolbox {

background: #fff;

height: 52px;

box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08), 0 2px 2px rgba(0, 0, 0, 0.15);

width: 300px;

border-radius: 40px;

top: -30px;

left: 0;

position: absolute;

visibility: hidden;

opacity: 0;

transition: opacity 0.15s;

}

.legend-reaction {

background: rgba(0, 0, 0, 0.75);

border-radius: 10px;

box-sizing: border-box;

color: #fff;

display: inline-block;

font-size: 11px;

text-overflow: ellipsis;

font-weight: bold;

line-height: 20px;

max-width: 850%;

width: 90px;

opacity: 0;

overflow: hidden;

padding: 0 6px;

transition: opacity 50ms ease;

left: 50%;

position: absolute;

text-align: center;

top: -28px;

transform: translateX(-50%);

}

.box:hover [class*="reaction-"] {

transform: scale(0.8) translateY(-40px);

}

.box:hover [class*="reaction-"]:hover, .box:hover [class*="reaction-"]:focus {

transition: all 0.2s ease-in;

transform: scale(1) translateY(-35px);

}

.box:hover [class*="reaction-"]:hover .legend-reaction, .box:hover [class*="reaction-"]:focus .legend-reaction {

opacity: 1;

}

.box:hover .toolbox {

opacity: 1;

}

.box:hover .toolbox {

visibility: visible;

}

.box:hover .reaction-love {

transition-delay: 0.03s;

}

.box:hover .reaction-haha {

transition-delay: 0.09s;

}

.box:hover .reaction-wow {

transition-delay: 0.12s;

}

.box:hover .reaction-sad {

transition-delay: 0.15s;

}

.box:hover .reaction-angry {

transition-delay: 0.18s;

}

.field-reactions:checked ~ [class*="reaction-"] {

transform: scale(0.8) translateY(-40px);

}

.field-reactions:checked ~ [class*="reaction-"]:hover, .field-reactions:checked ~ [class*="reaction-"]:focus {

transition: all 0.2s ease-in;

transform: scale(1) translateY(-35px);

}

.field-reactions:checked ~ [class*="reaction-"]:hover .legend-reaction, .field-reactions:checked ~ [class*="reaction-"]:focus .legend-reaction {

opacity: 1;

}

.field-reactions:checked ~ .toolbox {

opacity: 1;

}

.field-reactions:checked ~ .toolbox,

.field-reactions:checked ~ .overlay {

visibility: visible;

}

.field-reactions:checked ~ .reaction-love {

transition-delay: 0.03s;

}

.field-reactions:checked ~ .reaction-haha {

transition-delay: 0.09s;

}

.field-reactions:checked ~ .reaction-wow {

transition-delay: 0.12s;

}

.field-reactions:checked ~ .reaction-sad {

transition-delay: 0.15s;

}

.field-reactions:checked ~ .reaction-angry {

transition-delay: 0.18s;

}

.reaction-like {

left: 0;

background-position: 0 -144px;

}

.reaction-love {

background-position: 0 -192px;

left: 50px;

}

.reaction-haha {

background-position: 0 -96px;

left: 100px;

}

.reaction-wow {

background-position: 0 -288px;

left: 150px;

}

.reaction-sad {

background-position: 0 -240px;

left: 200px;

}

.reaction-angry {

left: 250px;

}

.footer {

padding-top: 105px;

}

Con el anterior CSS tenemos la animación y las medidas necesarias para hacer funcionar Reactions.

Ahora en nuestro archivo index.html creamos las siguientes lineas:

index.html

En los comentarios explico para que sirve cada elemento:


<div class="box">
   <input type="checkbox" id="like" class="field-reactions">    

   <!-- Texto de ayuda -->        
   <h3 class="text-desc">Presiona TAB para navegar por las reacciones y luego ENTER para elegir.</h3>

   <!-- Mostramos el texto Me Gusta -->
   <label for="like" class="label-reactions">Me Gusta</label>

   <!-- Creamos el contenedor para mostrar los iconos -->
   <div class="toolbox"></div>

   <!-- Creamos los iconos para cada reacción -->
   <button class="reaction-like"><span class="legend-reaction">Me gusta</span></button>
   <button class="reaction-love"><span class="legend-reaction">Me encanta</span></button>
   <button class="reaction-haha"><span class="legend-reaction">Me divierte</span></button>
   <button class="reaction-wow"><span class="legend-reaction">Me asombra</span></button>
   <button class="reaction-sad"><span class="legend-reaction">Me entristece</span></button>
   <button class="reaction-angry"><span class="legend-reaction">Me enoja</span></button>
</div>