BootStrap背景圖片設置

body {

  height: 1000px;
  background-image: url('../img/bodyimg.jpg');
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center 0;
  background-repeat: no-repeat;
  background-attachment: fixed;
  -webkit-background-size: cover;
  -o-background-size: cover;
  -moz-background-size: cover;
  -ms-background-size: cover;
}