测试代码
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title><style>body{margin:0px;padding:0px;background-color: gray;}.myButton{background-color:rgb(200, 0, 0);width:120px;height:50px;border:none;/*无边框线*/color:white;font-size:18px;cursor:pointer;/*相对static定位向左偏移100px，向下偏移100px，方便看而已*/position:relative;left:100px;top:100px;}.myButton:hover, .myButton:active{/*active表示点击时的样式*/background-color: rgb(230,0,0);}.myButton:focus{outline:none; /*在border之外的一圈轮廓线*/}</style></head><body><button class="myButton">按钮</button></body></html>
