SOURCE

<input type="button"class="login" href="#"
       value="登陆">

.login{
  position:relative;
  color:rgba(255,255,255,1);
  text-decoration:none;
  background-color:rgba(255,87,51,1);
  font-family:"微软雅黑";
  font-weight:700;
  font-size:3em;
  display:block;
  padding:4px;
  border-radius:8px;
  box-shadow:2px 2px 0px rgba(219,31,5,1);
  margin:100px auto;
  width:160px;
  text-align:center;
  transition:all .1s ease;
  -webkit-tansition：all .1s ease;
  -moz-tansition：all .1s ease;
}
.login:active{
  position:relative;
  top:6px;
  box-shadow:0px 3px 0px rgba(219,31,5,1);
}