HTML Copy Text Button Code

<style>
.myButton {
    -moz-box-shadow:inset 0px 1px 0px 0px #f5978e;
    -webkit-box-shadow:inset 0px 1px 0px 0px #f5978e;
    box-shadow:inset 0px 1px 0px 0px #f5978e;
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #f24537), color-stop(1, #c62d1f));
    background:-moz-linear-gradient(top, #f24537 5%, #c62d1f 100%);
    background:-webkit-linear-gradient(top, #f24537 5%, #c62d1f 100%);
    background:-o-linear-gradient(top, #f24537 5%, #c62d1f 100%);
    background:-ms-linear-gradient(top, #f24537 5%, #c62d1f 100%);
    background:linear-gradient(to bottom, #f24537 5%, #c62d1f 100%);
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#f24537', endColorstr='#c62d1f',GradientType=0);
    background-color:#f24537;
    -moz-border-radius:6px;
    -webkit-border-radius:6px;
    border-radius:6px;
    border:1px solid #d02718;
    display:inline-block;
    cursor:pointer;
    color:#ffffff;
    font-family:Arial;
    font-size:15px;
    font-weight:bold;
    padding:6px 24px;
    text-decoration:none;
    text-shadow:0px 1px 0px #810e05;
    font-color: white;
}
.myButton:hover {
    background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #c62d1f), color-stop(1, #f24537));
    background:-moz-linear-gradient(top, #c62d1f 5%, #f24537 100%);
    background:-webkit-linear-gradient(top, #c62d1f 5%, #f24537 100%);
    background:-o-linear-gradient(top, #c62d1f 5%, #f24537 100%);
    background:-ms-linear-gradient(top, #c62d1f 5%, #f24537 100%);
    background:linear-gradient(to bottom, #c62d1f 5%, #f24537 100%);
    filter:progid:DXImageTransform.Microsoft.gradient(startColorstr='#c62d1f', endColorstr='#f24537',GradientType=0);
    background-color:#c62d1f;
}
.myButton:active {
    position:relative;
    top:1px;
    font-color: white;
}
</style>
<script>
function copyToClipboard(element) {
  var $temp = $("<input>");
  $("body").append($temp);
  $temp.val($(element).text()).select();
  document.execCommand("copy");
  $temp.remove();
}
</script>
<center>

<a href="#copied" class="myButton" onclick="copyToClipboard('#sentence')">Copy Test</a>
<br></br>
<p id="sentence">This is a sentence.</p>

</center>