CSS: border-radius

The border-radius allows you to add rounded corners to elements.
CSS Border radius generator – https://border-radius.com.

Curve ALL corners

-webkit-border-radius: 10px;
-moz-border-radius: 10px;
border-radius: 10px;

Curve TOP corners

-webkit-border-top-left-radius: 10px;
-webkit-border-top-right-radius: 10px;
-moz-border-radius-topleft: 10px;
-moz-border-radius-topright: 10px;
border-top-left-radius: 10px;
border-top-right-radius: 10px;

Curve BOTTOM corners

-webkit-border-bottom-right-radius: 10px;
-webkit-border-bottom-left-radius: 10px;
-moz-border-radius-bottomright: 10px;
-moz-border-radius-bottomleft: 10px;
border-bottom-right-radius: 10px;
border-bottom-left-radius: 10px;

Curve LEFT corners

-webkit-border-top-left-radius: 10px;
-webkit-border-bottom-left-radius: 10px;
-moz-border-radius-topleft: 10px;
-moz-border-radius-bottomleft: 10px;
border-top-left-radius: 10px;
border-bottom-left-radius: 10px;

Curve RIGHT corners

-webkit-border-top-right-radius: 10px;
-webkit-border-bottom-right-radius: 10px;
-moz-border-radius-topright: 10px;
-moz-border-radius-bottomright: 10px;
border-top-right-radius: 10px;
border-bottom-right-radius: 10px;