Анон, не мучай жопу, есть кнопкогенератор.
Там тебе и тень и плетень и цвет и звук.
http://www.bestcssbuttongenerator.com/#/1

.anonLaButton {
-moz-box-shadow: 3px 4px 7px 0px #ab16ab;
-webkit-box-shadow: 3px 4px 7px 0px #ab16ab;
box-shadow: 3px 4px 7px 0px #ab16ab;
background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #b47aff), color-stop(1, #e339d8));
background:-moz-linear-gradient(top, #b47aff 5%, #e339d8 100%);
background:-webkit-linear-gradient(top, #b47aff 5%, #e339d8 100%);
background:-o-linear-gradient(top, #b47aff 5%, #e339d8 100%);
background:-ms-linear-gradient(top, #b47aff 5%, #e339d8 100%);
background:linear-gradient(to bottom, #b47aff 5%, #e339d8 100%);
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#b47aff', endColorstr='#e339d8',GradientType=0);
background-color:#b47aff;
-moz-border-radius:5px;
-webkit-border-radius:5px;
border-radius:5px;
border:1px solid #8e34c2;
display:inline-block;
cursor:pointer;
color:#ffffff;
font-family:Arial;
font-size:17px;
font-weight:bold;
padding:12px 44px;
text-decoration:none;
text-shadow:0px 1px 0px #9654cc;
}
.anonLaButton:hover {
background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #e339d8), color-stop(1, #b47aff));
background:-moz-linear-gradient(top, #e339d8 5%, #b47aff 100%);
background:-webkit-linear-gradient(top, #e339d8 5%, #b47aff 100%);
background:-o-linear-gradient(top, #e339d8 5%, #b47aff 100%);
background:-ms-linear-gradient(top, #e339d8 5%, #b47aff 100%);
background:linear-gradient(to bottom, #e339d8 5%, #b47aff 100%);
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#e339d8', endColorstr='#b47aff',GradientType=0);
background-color:#e339d8;
}
.anonLaButton:active {
position:relative;
top:1px;
}

<a href="#" class="anonLaButton">blue</a>