.cm{
  position: fixed;
  left: 10px;
  bottom: 15px;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}
 .cm_sch{
  position: fixed;
  right: 10px;
  bottom: 25px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}
 .cm img,
 .cm_sch img{
   width: 250px;
   cursor: pointer;
 }
 .close-btn {
  position: absolute;
  top: -15px;
  left: 10px;
  background: none;
  border: none;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  font-size: 22px;
  font-weight: bold;
  color: #333;
  text-align: center;
  cursor: pointer;
  line-height: 0;
}
@media screen and (max-width: 720px) {
   .cm,
   .cm_sch{
   bottom: 15px;
 }
 .close-btn {
  top: -20px;
   left: 0;
}

 .cm img,
.cm_sch img{
   width: 160px;
   cursor: pointer;
 }

}