我想更改具有不同颜色的按钮的背景颜色，但最终在按钮和 .bd 中重叠 css
Javascript：
var restart = webiopi().createMacroButton("macro", "restart", "myMacroWithoutArgs1");
$("#restart").append(restart);
var shutdown = webiopi().createMacroButton("macro", "shutdown", "myMacroWithoutArgs2");
$("#shutdown").append(shutdown);
var schedule_set = webiopi().createMacroButton("debug", "debug");
$("#debug").append(schedule_set);
var back = webiopi().createMacroButton("back", "หน้าหลัก");
$("#back").append(back);
CSS：
<style type="text/css">
button {
display: block;
margin: 5px 5px 5px 5px;
width: 160px;
height: 45px;
font-size: 24pt;
font-weight: bold;
color: white;
}
.bd{
display: block;
margin: 5px 5px 5px 5px;
width: 160px;
height: 45px;
font-size: 24pt;
font-weight: bold;
box-shadow: 3px 4px 0px 0px #1564ad;
background:-webkit-gradient(linear, left top, left bottom, color-stop(0.05, #79bbff), color-stop(1, #378de5));
background:-moz-linear-gradient(top, #79bbff 5%, #378de5 100%);
background:-webkit-linear-gradient(top, #79bbff 5%, #378de5 100%);
background:-o-linear-gradient(top, #79bbff 5%, #378de5 100%);
background:-ms-linear-gradient(top, #79bbff 5%, #378de5 100%);
background:linear-gradient(to bottom, #79bbff 5%, #378de5 100%);
background-color:#666666;
}
</style>
HTML：
<div id="debug"
onClick="self.location='debug.html'">
</div>
<div id="restart"></div>
<div class="bd" id="shutdown"></div>
<div id="back"
onClick="self.location='index.html'">
</div>
希望任何人都可以告诉我如何正确解决此问题？谢谢