SOURCE

<div class="ribbon"><span class="ribbon1"><span>丝带效果1</span></span></div>
  <div class="ribbon"><span class="ribbon2">丝<br>带<br>效<br>果<br>2</span></div>
  <div class="ribbon"><span class="ribbon3">丝带效果3</span></div>
  <div class="ribbon"><span class="ribbon4">丝带效果4</span></div>
  <div class="ribbon"><span class="ribbon5">丝带效果5</span></div>
  <div class="ribbon"><div class="wrap"><span class="ribbon6">丝带效果6</span></div></div>

.ribbon {
  display: inline-block;
  width: 46%;
  height: 188px;
  position: relative;
  float: left;
  background: url(https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fimg.1ppt.com%2Fuploads%2Fallimg%2F1812%2F1_181205214646_1.JPG&refer=http%3A%2F%2Fimg.1ppt.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1666186112&t=13e6f5934c9738c34510bebddfecbe57);
  background-size: cover;
  text-transform: uppercase;
  color: white;
  margin: 0 10px 10px 0;
}
.ribbon:nth-child(even) {margin-right: 4%;}
@media (max-width: 500px) {
  .ribbon {width: 100%}
  .ribbon:nth-child(even) {margin-right: 0%;}
}

.ribbon1 {
    position: absolute;
    top: -6px;
    right: 10px;
}
.ribbon1:after {
    position: absolute;
    content: "";
    display: block;
    width: 0;
    height: 0;
    border-left: 53px solid transparent;
    border-right: 53px solid transparent;
    border-top: 10px solid #F8463F;
}
.ribbon1 span {
    position: relative;
    display: inline-block;
    text-align: center;
    background: #F8463F;
    font-size: 14px;
    line-height: 1;
    padding: 12px 8px 10px;
    border-top-right-radius: 8px;
    width: 90px;
}
.ribbon1 span:before, .ribbon1 span:after {
    position: absolute;
    content: "";
    display: block;
}
.ribbon1 span:before {
    background: #F8463F;
    height: 6px;
    width: 6px;
    left: -6px;
    top: 0;
}
.ribbon1 span:after {
    background: #C02031;
    height: 6px;
    width: 8px;
    border-radius: 8px 8px 0 0;
    left: -8px;
    top: 0;
}

.ribbon2 {
  display: inline-block;
  width: 60px;
  padding: 10px 0;
  background: #F47530;
  top: -6px;
  left: 25px;
  position: absolute;
  text-align: center;
  border-top-left-radius: 3px;
}
.ribbon2:before {
   height: 0;
   width: 0;
   border-bottom: 6px solid #8D5A20;
   border-right: 6px solid transparent;
   right: -6px;
   top: 0;
}
.ribbon2:before, .ribbon2:after {
    content: "";
    position: absolute;
}
.ribbon2:after {
    height: 0;
    width: 0;
    border-left: 30px solid #F47530;
    border-right: 30px solid #F47530;
    border-bottom: 30px solid transparent;
    bottom: -30px;
    left: 0;
}

.ribbon3 {
  display: inline-block;
  position: absolute;
  width: 150px;
  height: 50px;
  line-height: 50px;
  padding-left: 15px;
  background: #59324C;
  left: -8px;
  top: 20px
}
.ribbon3:before, .ribbon3:after {
    content: "";
    position: absolute;
}
.ribbon3:before {
  height: 0;
  width: 0;
  border-bottom: 8px solid black;
  border-left: 8px solid transparent;
  top: -8px;
  left: 0;
}
.ribbon3:after {
  height: 0;
  width: 0;
  border-top: 25px solid transparent;
  border-bottom: 25px solid transparent;
  border-left: 15px solid #59324C;
  right: -15px;
}

.ribbon4 {
    position: absolute;
    top: 15px;
    padding: 8px 10px;
    background: #00B3ED;
    box-shadow: -1px 2px 4px rgba(0,0,0,0.5);
  }
.ribbon4:before, .ribbon4:after {
    position: absolute;
    content: "";
    display: block;
}
.ribbon4:before {
    width: 7px;
    height: 100%;
    padding: 0 0 7px;
    top: 0;
    left: -7px;
    background: inherit;
    border-radius: 5px 0 0 5px;
}
.ribbon4:after {
    width: 5px;
    height: 5px;
    background: rgba(0,0,0,0.35);
    bottom: -5px;
    left: -5px;
    border-radius: 5px 0 0 5px;
 }

 .ribbon5 {
  display: inline-block;
  width: calc(100% + 20px);
  height: 50px;
  line-height: 50px;
  text-align: center;
  margin-left: -10px;
  margin-right: -10px;
  background: #EDBA19;
  position: relative;
  top: 20px;
}
.ribbon5:before {
  content: "";
  position: absolute;
  height: 0;
  width: 0;
  border-top: 10px solid #cd8d11;
  border-left: 10px solid transparent;
  bottom: -10px;
  left: 0;
}
.ribbon5:after {
  content: "";
  position: absolute;
  height: 0;
  width: 0;
  border-top: 10px solid #cd8d11;
  border-right: 10px solid transparent;
  right: 0;
  bottom: -10px;
}

.wrap {
  width: 100%;
  height: 188px;
  position: absolute;
  top: -8px;
  left: 8px;
  overflow: hidden;
}
.wrap:before {
    content: "";
    display: block;
    border-radius: 8px 8px 0px 0px;
    width: 40px;
    height: 8px;
    position: absolute;
    right: 100px;
    background: #4D6530;
}
.wrap:after {
    content: "";
    display: block;
    border-radius: 0px 8px 8px 0px;
    width: 8px;
    height: 40px;
    position: absolute;
    right: 0px;
    top: 100px;
    background: #4D6530;
}
.ribbon6 {
  display: inline-block;
  text-align: center;
  width: 200px;
  height: 40px;
  line-height: 40px;
  position: absolute;
  top: 30px;
  right: -50px;
  z-index: 2;
  overflow: hidden;
  transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  border: 1px dashed;
  box-shadow:0 0 0 3px #57DD43,  0px 21px 5px -18px rgba(0,0,0,0.6);
 background: #57DD43;
}