html5-css边框img

div{
    width: 500px;
    height: 300px;
    background: rgb(122,30,60);
    border:15px solid black;
    /*border-image-source: url(../pic/bg4.jpg);
    border-image-slice: 30;
    border-image-slice: 30 fill;
    border-image-width: 5px;*/
    /*border-right-width: 30px 50px;
    border-image-outset:10px ;*/
    /*border-image-repeat:repeat; */
    /*border-image-repeat: stretch round;
    border-image-repeat:round stretch;*/
    /*border-image-repeat: round;*/
    border-image: url(../pic/bg4.jpg) 30  /5px /5px  repeat;
    }