<style type="text/css">
.button3 {
background-color:#3bb3e0; /* Hintergrundfarbe */
font-family: ‘Open Sans’, sans-serif; /* Schriftart */
font-size:12px; /* Schriftgröße */
text-decoration:none; /* Link ist nicht unterstrichen */
color:#fff; /* Schriftfarbe */
position:relative;
padding:10px 20px; /* Abstand */
padding-right:50px; /* Der Abstand von rechts */
background-image: linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%); /* Farbverlauf im Button */
background-image: -o-linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%);
background-image: -moz-linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%);
background-image: -webkit-linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%);
background-image: -ms-linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%);
background-image: -webkit-gradient(
linear,
left bottom,
left top,
color-stop(0, rgb(44,160,202)),
color-stop(1, rgb(62,184,229))
);
-webkit-border-radius: 5px; /* Abgerundet */
-moz-border-radius: 5px;
-o-border-radius: 5px;
border-radius: 5px;
-webkit-box-shadow: inset 0px 1px 0px #2ab7ec, 0px 5px 0px 0px #156785, 0px 10px 5px #999;
-moz-box-shadow: inset 0px 1px 0px #2ab7ec, 0px 5px 0px 0px #156785, 0px 10px 5px #999;
-o-box-shadow: inset 0px 1px 0px #2ab7ec, 0px 5px 0px 0px #156785, 0px 10px 5px #999;
box-shadow: inset 0px 1px 0px #2ab7ec, 0px 5px 0px 0px #156785, 0px 10px 5px #999;
}<p></p>
<p>.button3:active { /* Wenn man auf den Button klickt */
top:3px;
background-image: linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%); /* Farbverlauf im Button */
background-image: -o-linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%);
background-image: -moz-linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%);
background-image: -webkit-linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%);
background-image: -ms-linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%);
background-image: -webkit-gradient(
linear,
left bottom,
left top,
color-stop(0, rgb(62,184,229)),
color-stop(1, rgb(44,160,202))
);
-webkit-box-shadow: inset 0px 1px 0px #2ab7ec, 0px 2px 0px 0px #156785, 0px 5px 3px #999; /* Abgerundet */
-moz-box-shadow: inset 0px 1px 0px #2ab7ec, 0px 2px 0px 0px #156785, 0px 5px 3px #999;
-o-box-shadow: inset 0px 1px 0px #2ab7ec, 0px 2px 0px 0px #156785, 0px 5px 3px #999;
box-shadow: inset 0px 1px 0px #2ab7ec, 0px 2px 0px 0px #156785, 0px 5px 3px #999;
}</p>
</style>