Generated by SassMeister.com.

SassMeister-input-HTML.html

<div class="block">block</div>

SassMeister-input.scss

// ----
// libsass (v3.2.5)
// ----

@mixin border-radius($rad){
  -webkit-border-radius:$rad;
  -moz-border-radius:$rad;
  border-radius:$rad;
}
.block{
  @include border-radius(10px);
  background:#ccc;
  padding:15px;
  width:100px;
}

SassMeister-output.css

.block {
  -webkit-border-radius: 10px;
  -moz-border-radius: 10px;
  border-radius: 10px;
  background: #ccc;
  padding: 15px;
  width: 100px;
}

SassMeister-rendered.html

<div class="block">block</div>