I am using border-radius property to acheive rounded corners. But I am not sure how to get rounded corners of this shape. I tried giving same dimensions from either sides but they just dont give me the exact shape. Am I missing some CSS3 property here.
Just wondering if clip css property is the answer.
UPDATE:
Triangles in different sizes with border radius
To flip or to change vertical alignment fork translateY() and rotate()
/*triangle background large*/
.triangle-bg-lg, .triangle-bg-lg:before, .triangle-bg-lg:after { width: 25em; height: 25em; }
/*triangle background medium*/
.triangle-bg-md, .triangle-bg-md:before, .triangle-bg-md:after { width: 20em; height: 20em; }
/*triangle background small*/
.triangle-bg-sm, .triangle-bg-sm:before, .triangle-bg-sm:after { width: 15em; height: 15em; }
/*triangle background extra small*/
.triangle-bg-xs, .triangle-bg-xs:before, .triangle-bg-xs:after { width: 10em; height: 10em; }
/*triangle background extra extra small*/
.triangle-bg-xxs, .triangle-bg-xxs:before, .triangle-bg-xxs:after { width: 5em; height: 5em; }
/*common triangle style*/
.triangle-bg-lg,.triangle-bg-md, .triangle-bg-sm,.triangle-bg-xs,.triangle-bg-xxs {
overflow: hidden;
position: relative;
margin:2em auto;
border-radius: 20%;
transform: translateY(50%) rotate(30deg) skewY(30deg) scaleX(.866);
}
.triangle-bg-lg:before, .triangle-bg-lg:after,.triangle-bg-md:before, .triangle-bg-md:after, .triangle-bg-sm:before, .triangle-bg-sm:after,.triangle-bg-xxs:before, .triangle-bg-xxs:after{
position: absolute;
background: #ccc;
pointer-events: auto;
content: '';
}
.triangle-bg-xs:before, .triangle-bg-xs:after{
background: #ccc;
position: absolute;
pointer-events: auto;
content: '';
}
.triangle-bg-lg:before, .triangle-bg-md:before, .triangle-bg-sm:before, .triangle-bg-xs:before,.triangle-bg-xxs:before {
border-radius: 20% 20% 20% 53%;
transform: scaleX(1.155) skewY(-30deg) rotate(-30deg) translateY(-42.3%)
skewX(30deg) scaleY(.866) translateX(-24%);
}
.triangle-bg-lg:after, .triangle-bg-md:after,.triangle-bg-sm:after,.triangle-bg-xs:after,.triangle-bg-xxs:after {
border-radius: 20% 20% 53% 20%;
transform: scaleX(1.155) skewY(-30deg) rotate(-30deg) translateY(-42.3%)
skewX(-30deg) scaleY(.866) translateX(24%);
}<div class="page-container">
<div class="triangle-bg-lg"></div>
<div class="triangle-bg-md"></div>
<div class="triangle-bg-sm"></div>
<div class="triangle-bg-xs"></div>
<div class="triangle-bg-xxs"></div>
</div><!DOCTYPE html>
<html>
<head>
<style>
.trio {position:absolute;}
.trio .triangle {
position: relative;
background-color: #DB524B;
text-align: left;
}
.trio .triangle:before,
.trio .triangle:after {
content: '';
position: absolute;
background-color: inherit;
}
.trio .triangle,
.trio .triangle:before,
.trio .triangle:after {
width: 3em;
height: 3em;
border-top-right-radius: 33%;
}
.trio .triangle {
transform: rotate(-60deg) skewX(-30deg) scale(1,.866);
}
.trio .triangle:before {
transform: rotate(-135deg) skewX(-45deg) scale(1.414,.707) translate(0,-50%);
}
.trio .triangle:after {
transform: rotate(135deg) skewY(-45deg) scale(.707,1.414) translate(50%);
}
.trio .exclamation{
color: #DB524B;
position:absolute;
font-size:50px;
top:8px;
left:15px;
z-index:2;
}
.trio .triangle.tri-in {
background-color: #fff;
margin-top: -2.9em;
margin-left: 1px;
}
.trio .tri-in,
.trio .tri-in:before,
.trio .tri-in:after {
width: 2.9em;
height: 2.9em;
border-top-right-radius: 33%;
}
/* styles below for demonstration purposes only */
body { padding: 30%; }
</style>
</head>
<body>
<div class="trio">
<span class="exclamation">!</span>
<div class='triangle'></div>
<div class='triangle tri-in'></div>
</div>
</body>
</html>
I used this for add triagle to link:
.review-box_left-link:after{
content: '';
position: absolute;
width: 19px;
height: 19px;
background: #2195DB;
border-radius: 2px;
transform: rotate(-45deg);
background: linear-gradient(to right bottom, white 0%,white 50%,#2195DB 50%,#2195DB 50%,#2195DB 100%);
}