跟着老师一步步做的，不知道问题在哪，大神们能不能帮帮我
<!DOCTYPE <!DOCTYPE html>
<html>
<head>
<mata charset=UTF-8>
<title>CSS3 HOVER</title>
<style type="text/css">
.demo,.img,.mask,.border{
widows: 300px;
height: 300px;
border-radius: 50%
}
.demo{
position: relative;
display: block;
}
.img{
background-size: cover;
background-position: 50% 50%
}
.mask,.border{
position:absolute;
left: 0;
top: 0;
}
.mask{
text-align: center;
color:rgb(255,255,255,0);
transform: all .5s ease-in;
}
.info{
margin-top: 50%;
transform: translateY(-50%);
}
.border{
border: 10px solid #072256;
border-left-color: #E07514;
border-top-color: #E07514;
box-sizing: border-box;.
transform: all .5s ease-in
}
.demo:hover .mask{
background-color: rgb(0,0,0,.5)
color:rgb(255,255,255,1);
}
.demo:hover .border{
transform: rotate(180deg);
}
</style>
</head>
<body>
<a href="#">
<div style="background-image: url(https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3706655881,2608843140&fm=111&gp=0.jpg)"></div>
<div>
<div>
<h3>Goddess</h3>
<p>Description goes here</p>
</div>
</div>
<div></div>
</a>
</body>
</html>
