.box {
    position: relative;
    /* max-width: 600px; */
    /* width: 90%; */
    /* height: 400px; */
    /* background: #fff; */
    /* box-shadow: 0 0 15px rgba(0,0,0,.1); */
}

/* common */
.ribbon {
  width: 84px;
  height: 82px;
  overflow: hidden;
  position: absolute;
}
    .ribbon::before, .ribbon::after {
        position: absolute;
        z-index: -1;
        content: '';
        display: block;
        /* border: 5px solid #0024c8; */
    }
.ribbon span {
  position: absolute;
  display: block;
  width: 130px;
  padding: 4px 0;
  background-color: #ff0000;
  box-shadow: 0 5px 10px rgba(0,0,0,.1);
  color: #fff;
  font: 700 12px/1 'Lato', sans-serif;
  text-shadow: 0 1px 1px rgba(0,0,0,.2);
  text-transform: uppercase;
  text-align: center;
  letter-spacing: 2px;
}
/* bottom right*/
.ribbon-bottom-right {
    bottom: 0px;
    right: 0px;
}
.ribbon-bottom-right::before,
.ribbon-bottom-right::after {
  border-bottom-color: transparent;
  border-right-color: transparent;
}
.ribbon-bottom-right::before {
  bottom: -3px;
  left: 23px;
}
.ribbon-bottom-right::after {
  top: 23px;
  right: -2px;
}
.ribbon-bottom-right span {
    left: -3px;
    bottom: 12px;
    transform: rotate(315deg);
}