@mixin border-radius($radius) {
  -webkit-border-radius: $radius;
     -moz-border-radius: $radius;
      -ms-border-radius: $radius;
          border-radius: $radius;
}

@mixin fade-in($delay) {
	animation: fadeIn ease $delay;
	-webkit-animation: fadeIn ease $delay;
	-moz-animation: fadeIn ease $delay;
	-o-animation: fadeIn ease $delay;
	-ms-animation: fadeIn ease $delay;
}
@keyframes fadeIn {
    from { opacity:0; } to { opacity:1; }
}
@mixin slide-down($delay) {
  	-webkit-transition: margin-top $delay ease-in-out;
	-moz-transition: margin-top $delay ease-in-out;
  	-o-transition: margin-top $delay ease-in-out;
  	-ms-transition: margin-top $delay ease-in-out;
	transition: margin-top $delay ease-in-out;
}

.box {
	@include border-radius(3px);
	padding: 20px;
	border: solid 1px #ccc;
	background-color: #eee;
}