@mixin box-shadow($shadow1, $shadow2: none, $shadow3: none, $shadow4: none, $shadow5: none) {
-webkit-box-shadow: $shadow1, $shadow2, $shadow3, $shadow4, $shadow5; -moz-box-shadow: $shadow1, $shadow2, $shadow3, $shadow4, $shadow5; -o-box-shadow: $shadow1, $shadow2, $shadow3, $shadow4, $shadow5; box-shadow: $shadow1, $shadow2, $shadow3, $shadow4, $shadow5;
}