Generated by SassMeister.com.

SassMeister-input-HTML.html

<div class="example-block">
    <!-- START RIBBON -->
    <div class="ribbon ribbon-red">
        <div class="banner">
            <div class="text">30 Day Free Trial</div>
        </div>
    </div>
    <!-- END RIBBON -->
    <div class="headline">Professional</div>
    <div class="tagline">Perfect for business growth.</div>
    <div class="price">$15/month</div>
    <a class="action-button">Get Professional</a>
</div>

SassMeister-input.scss

// ----
// Sass (v3.4.1)
// Compass (v1.0.1)
// ----

@mixin rotate($amount) {
  -webkit-transform: rotate($amount);
	-moz-transform: rotate($amount);
	-ms-transform: rotate($amount);
	-o-transform: rotate($amount);
	transform: rotate($amount);
}

.example-block {
    position: relative;
    margin: 50px auto;
    width: 400px;
    background: #fff;
    border: 1px solid #aaaeb0;
    border-radius: 4px;
    padding: 20px 0;
    text-align: center;
}
/* RIBBON BANNERS */

.ribbon {
	position: absolute;
	top: 0;
	right: 0;
}

/* reset certain elements (in case of conflicting CSS for classes, links, etc.) */
.ribbon .text,
.ribbon .banner,
.ribbon a {
	margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    vertical-align: baseline;
    background: transparent;
}

.ribbon a {
	color: #fff;
	text-decoration: none;
}

.no-css-transforms .ribbon {
	font-size: 1em;
	position: relative;
	width: 100%;
}

.ribbon .banner {
  @include rotate(45deg);
	color: #fff;
	-webkit-font-smoothing: antialiased;
	display: block;
	float: right;
	position: relative;
	right: -14px;
	top: 22px;
	width: 100px;
}

.ribbon-small .banner {
	right: -8px;
	top: 15px;
	width: 65px;
}

.ribbon-large .banner {
	right: -20px;
	top: 32px;
	width: 150px;
}

.ribbon .banner::after,
.ribbon .banner::before {
	content: '';
	display: block;
	height: 12px;
	position: absolute;
	width: 30px;
}

.ribbon-small .banner::after,
.ribbon-small .banner::before {
	height: 6px;
	width: 20px;
}

.ribbon-large .banner::after,
.ribbon-large .banner::before {
	height: 18px;
	width: 45px;
}

.ribbon .banner::before {
	-webkit-transform: skewY(-45deg) translate(50%,15px);
	-moz-transform: skewY(-45deg) translate(50%,15px);
	-ms-transform: skewY(-45deg) translate(50%,15px);
	-o-transform: skewY(-45deg) translate(50%,15px);
	-webkit-transform-origin: 100% center;
	-moz-transform-origin: 100% center;
	-ms-transform-origin: 100% center;
	-o-transform-origin: 100% center;
	left: -45px;
}

.ribbon-small .banner::before {
	top: -5px;
	left: -30px;
}

.ribbon-large .banner::before {
	top: 9px;
	left: -68px;
}

.ribbon .banner::after {
	-webkit-transform: translate(100%,-100%) skewY(45deg) translateX(-58%);
	-moz-transform: translate(100%,-100%) skewY(45deg) translateX(-58%);
	-ms-transform: translate(100%,-100%) skewY(45deg) translateX(-58%);
	-o-transform: translate(100%,-100%) skewY(45deg) translateX(-58%);
	-webkit-transform-origin: 0 center;
	-moz-transform-origin: 0 center;
	-ms-transform-origin: 0 center;
	-o-transform-origin: 0 center;
	right: -17px;
}

.ribbon-small .banner::after {
	top: 18px;
	right: -12px;
}

.ribbon-large .banner::after {
	top: 45px;
	right: -26px;
}


.no-css-transforms .ribbon .banner {
	position: static;
	width: 100%;
	float: none;
	font-size: 10px;
}

.ribbon .text {
	position: relative;
	z-index: 2;
	padding: 6px 0;
	font-size: 12px;
	font-weight: bold;
	min-height: 18px;
	line-height: 18px;
	text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.20);
	white-space: nowrap;
	text-overflow: ellipsis;
}

/* small text */
.ribbon-small .text {
	padding: 3px 0;
	font-size: 8px;
	min-height: 14px;
	line-height: 14px;
}

/* large text */
.ribbon-large .text {
	padding: 9px 0;
	font-size: 18px;
	min-height: 28px;
	line-height: 28px;
}


.ribbon .text::before,
.ribbon .text::after {
	content: '';
	display: block;
	height: 30px;
	position: absolute;
	top: 0;
	width: 100%;
	z-index: -1;
}

/* small text */
.ribbon.ribbon-small .text::before,
.ribbon.ribbon-small .text::after {
	height: 20px;
}

/* large text */
.ribbon.ribbon-large .text::before,
.ribbon.ribbon-large .text::after {
	height: 46px;
}

.ribbon .text::before {
	-webkit-transform: translateX(-15%) skewX(-45deg);
	-moz-transform: translateX(-15%) skewX(-45deg);
	-ms-transform: translateX(-15%) skewX(-45deg);
	-o-transform: translateX(-15%) skewX(-45deg);
}

.ribbon .text::after {
	-webkit-transform: translateX(15%) skewX(45deg);
	-moz-transform: translateX(15%) skewX(45deg);
	-ms-transform: translateX(15%) skewX(45deg);
	-o-transform: translateX(15%) skewX(45deg);
}

.no-css-transforms .ribbon .text {
	height: 25px;
	padding: 3px;
}


/*--- RIBBON COLORS ---*/

/* default */
.ribbon .banner::after,
.ribbon .banner::before {
	background-color: #51a351;
}
.ribbon .text::before,
.ribbon .text::after,
.no-css-transforms .ribbon .text {
	background-color: #62c462;
}

SassMeister-output.css

.example-block {
  position: relative;
  margin: 50px auto;
  width: 400px;
  background: #fff;
  border: 1px solid #aaaeb0;
  border-radius: 4px;
  padding: 20px 0;
  text-align: center;
}

/* RIBBON BANNERS */
.ribbon {
  position: absolute;
  top: 0;
  right: 0;
}

/* reset certain elements (in case of conflicting CSS for classes, links, etc.) */
.ribbon .text,
.ribbon .banner,
.ribbon a {
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  font-size: 100%;
  vertical-align: baseline;
  background: transparent;
}

.ribbon a {
  color: #fff;
  text-decoration: none;
}

.no-css-transforms .ribbon {
  font-size: 1em;
  position: relative;
  width: 100%;
}

.ribbon .banner {
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
  color: #fff;
  -webkit-font-smoothing: antialiased;
  display: block;
  float: right;
  position: relative;
  right: -14px;
  top: 22px;
  width: 100px;
}

.ribbon-small .banner {
  right: -8px;
  top: 15px;
  width: 65px;
}

.ribbon-large .banner {
  right: -20px;
  top: 32px;
  width: 150px;
}

.ribbon .banner::after,
.ribbon .banner::before {
  content: '';
  display: block;
  height: 12px;
  position: absolute;
  width: 30px;
}

.ribbon-small .banner::after,
.ribbon-small .banner::before {
  height: 6px;
  width: 20px;
}

.ribbon-large .banner::after,
.ribbon-large .banner::before {
  height: 18px;
  width: 45px;
}

.ribbon .banner::before {
  -webkit-transform: skewY(-45deg) translate(50%, 15px);
  -moz-transform: skewY(-45deg) translate(50%, 15px);
  -ms-transform: skewY(-45deg) translate(50%, 15px);
  -o-transform: skewY(-45deg) translate(50%, 15px);
  -webkit-transform-origin: 100% center;
  -moz-transform-origin: 100% center;
  -ms-transform-origin: 100% center;
  -o-transform-origin: 100% center;
  left: -45px;
}

.ribbon-small .banner::before {
  top: -5px;
  left: -30px;
}

.ribbon-large .banner::before {
  top: 9px;
  left: -68px;
}

.ribbon .banner::after {
  -webkit-transform: translate(100%, -100%) skewY(45deg) translateX(-58%);
  -moz-transform: translate(100%, -100%) skewY(45deg) translateX(-58%);
  -ms-transform: translate(100%, -100%) skewY(45deg) translateX(-58%);
  -o-transform: translate(100%, -100%) skewY(45deg) translateX(-58%);
  -webkit-transform-origin: 0 center;
  -moz-transform-origin: 0 center;
  -ms-transform-origin: 0 center;
  -o-transform-origin: 0 center;
  right: -17px;
}

.ribbon-small .banner::after {
  top: 18px;
  right: -12px;
}

.ribbon-large .banner::after {
  top: 45px;
  right: -26px;
}

.no-css-transforms .ribbon .banner {
  position: static;
  width: 100%;
  float: none;
  font-size: 10px;
}

.ribbon .text {
  position: relative;
  z-index: 2;
  padding: 6px 0;
  font-size: 12px;
  font-weight: bold;
  min-height: 18px;
  line-height: 18px;
  text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.2);
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* small text */
.ribbon-small .text {
  padding: 3px 0;
  font-size: 8px;
  min-height: 14px;
  line-height: 14px;
}

/* large text */
.ribbon-large .text {
  padding: 9px 0;
  font-size: 18px;
  min-height: 28px;
  line-height: 28px;
}

.ribbon .text::before,
.ribbon .text::after {
  content: '';
  display: block;
  height: 30px;
  position: absolute;
  top: 0;
  width: 100%;
  z-index: -1;
}

/* small text */
.ribbon.ribbon-small .text::before,
.ribbon.ribbon-small .text::after {
  height: 20px;
}

/* large text */
.ribbon.ribbon-large .text::before,
.ribbon.ribbon-large .text::after {
  height: 46px;
}

.ribbon .text::before {
  -webkit-transform: translateX(-15%) skewX(-45deg);
  -moz-transform: translateX(-15%) skewX(-45deg);
  -ms-transform: translateX(-15%) skewX(-45deg);
  -o-transform: translateX(-15%) skewX(-45deg);
}

.ribbon .text::after {
  -webkit-transform: translateX(15%) skewX(45deg);
  -moz-transform: translateX(15%) skewX(45deg);
  -ms-transform: translateX(15%) skewX(45deg);
  -o-transform: translateX(15%) skewX(45deg);
}

.no-css-transforms .ribbon .text {
  height: 25px;
  padding: 3px;
}

/*--- RIBBON COLORS ---*/
/* default */
.ribbon .banner::after,
.ribbon .banner::before {
  background-color: #51a351;
}

.ribbon .text::before,
.ribbon .text::after,
.no-css-transforms .ribbon .text {
  background-color: #62c462;
}

SassMeister-rendered.html

<div class="example-block">
    <!-- START RIBBON -->
    <div class="ribbon ribbon-red">
        <div class="banner">
            <div class="text">30 Day Free Trial</div>
        </div>
    </div>
    <!-- END RIBBON -->
    <div class="headline">Professional</div>
    <div class="tagline">Perfect for business growth.</div>
    <div class="price">$15/month</div>
    <a class="action-button">Get Professional</a>
</div>