Example 1: html css good button
<button style="background-color: turquoise; border: none; border-radius: 5px; color: #333; padding: 15px 32px">Example button</button>
Example 2: css creative buttons
/* ADD FONT WITH SHADOW AND INCLUDE A LINEAR GRADIENT TO MAKE THE BUTTON
* MORE ATTRACTIVE IN WORDPRESS */
/* CONTACT US FORM HOME PAGE */
.button {
color: #fff;
text-shadow: 2px 2px 2px rgba(0, 0, 0, 1);
border-radius: 5px;
font-family: "Montserrat";
font-weight: 500;
padding-top: 1%;
padding-bottom: 1%;
background-color: #a28f9d;
background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, from(rgba(255, 255, 255, 0.6)), color-stop(0.49, rgba(255, 255, 255, 0.3)), color-stop(0.51, rgba(255, 255, 255, 0.0)), to(rgba(255, 255, 255, 0.2))); /* Chrome,Safari4+ */
background-image: -webkit-linear-gradient(top, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0.0) 51%, rgba(255, 255, 255, 0.2) 100%); /* Chrome10+,Safari5.1+ */
background-image: -moz-linear-gradient(top, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0.0) 51%, rgba(255, 255, 255, 0.2) 100%); /* FF3.6+ */
background-image: -o-linear-gradient(top, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0.0) 51%, rgba(255, 255, 255, 0.2) 100%); /* Opera11.10+ */
background-image: linear-gradient(top, rgba(255, 255, 255, 0.6) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0.0) 51%, rgba(255, 255, 255, 0.2) 100%); /* W3C */
}
.button:hover {
background-color: #84a98c;
}