element.style {
}
body {
    margin: 0px;
    padding: 0px;
    font-family: "\5FAE\8F6F\96C5\9ED1","黑体","\5B8B\4F53", Arial, Helvetica, sans-serif;
    font-size: 12px;
    color: #cfcfcf;
}
* {
    padding: 0;
    margin: 0;
}
user agent stylesheet
body {
    display: block;
    margin: 8px;
}
html, div, ul, li, dl, dt, dd, p, h1, h2, h3, h4, h5, h6, form, embed, label {
    margin: 0;
    padding: 0;
    border: 0px;
    font-size: 14px;
    font-weight: normal;
    color: SteelBlue;
}
img {
    margin: 0px;
    padding: 16px;
    border: 0;
    font-size: 12px;
    font-weight: normal;
    color: SteelBlue;
}
#blogTitle h1 a {
    color: #515151;
    margin : 10px 0px 45px 0px;
}
body { 
     background-color: #efefef;
     background-image: url("https://images.cnblogs.com/cnblogs_com/sillycat-studio/1423368/o_20041711364714.jpg");
     background-repeat: no-repeat; 
     background-attachment: fixed; 
     background-position: center 0; 
     background-size: cover; 
  }