I found a solution, note that it only works with a solid background.
HTML:
<div class="arrow">
START HERE!
</div>
CSS:
body {
background: #6cc5c3;
}
.arrow {
margin-top: 150px;
position: relative;
font-weight: bold;
margin-bottom: 5px;
height: 20px;
padding: 10px 30px 10px 10px;
width: 140px;
color: #6cc5c3;
background: #fff;
text-align: center;
}
.arrow:after {
content:'';
height: 0;
width: 0;
display: block;
border-color: #6cc5c3 #6cc5c3 #6cc5c3 transparent;
border-width: 20px;
border-style: solid;
position: absolute;
top: 0;
right: -20px;
}
.gradient {
background: #ffe632;
background: -webkit-gradient(linear, left top, left bottom, from(#fffe8d), to(#f6d23e));
background: -moz-linear-gradient(top, #fffe8d, #f6d23e);
}
The arrow is transparent, and the rest of the "arrow" is the same as the body background color.