CSS simple transition

new_gist_file.less

/* Twitter Bootstrap LESS mixin */
.transition(@property: all, @duration: 0.2s, @animation: ease-in) {
  transition:@property @duration @animation;
}

// Used like
.transition();
.transition(all, .2s);



/* CSS */
a {
-webkit-transition: opacity .3s ease-in;
-moz-transition: opacity .3s ease-in;
-o-transition: opacity .3s ease-in;
transition: opacity .3s ease-in;
}