.markdown-body img {    
    /* 添加图片阴影 */  

    box-shadow:0px 1px 4px rgba(0,0,0,0.3),0 0 40px rgba(0,0,0,0.1) inset;  
    webkit-box-shadow:0px 1px 4px rgba(0,0,0,0.3),0 0 40px rgba(0,0,0,0.1) inset;  
    moz-box-shadow:0px 1px 4px rgba(0,0,0,0.3),0 0 40px rgba(0,0,0,0.1) inset;  
    o-box-shadow:0px 1px 4px rgba(0,0,0,0.3),0 0 40px rgba(0,0,0,0.1) inset;}
｝