#my-slider {
  width: 100%;
  /*height: 404px;*/
  height: 277px;
  color: white;
  text-align: center;
  /*position: relative;*/
  margin: auto;
  /*z-index: -1;*/
  /*margin-top: 10px;*/
}

@media (max-width:767px){
  #my-slider {
    height: 154px;
  }
}

/*@media (max-width: 640px) {*/
  /*#my-slider .crs-bar-roll-current {*/
    /*width: 38px;*/
    /*height: 38px;*/
  /*}*/

  /*#my-slider .crs-bar-roll-item {*/
    /*width: 30px;*/
    /*height: 30px;*/
  /*}*/
/*}*/

.crs-wrap {
  position: relative;
  box-sizing: border-box;
}
.crs-wrap * {
  box-sizing: border-box;
}
.crs-screen {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}
.crs-screen-roll {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  display: flex;
  flex-wrap: wrap;
  transition: left 0.5s;
}
.crs-screen-item {
  width: 100%;
  height: 100%;
  background-position: center;
  background-size: cover;
}
.crs-screen-item-content {
  width: 100%;
  height: calc(100% - 50px);
  font-family: arial;
  padding: 50px;
}
.crs-bar {
  width: 100%;
  height: 50px;
  position: absolute;
  bottom: -20px;
  left: 0;
  padding: 10px;
}
.crs-bar-roll-current {
  width: 20px;
  height: 10px;
  border-radius: 12px;
  border: 2px solid red;
  position: absolute;
  z-index: 1;
  left: 0;
  right: 0;
  margin: auto;
  background: red;
  /*top: 5px;*/
  margin-top: 5px;
}
@media (min-width: 1024px) {
  .crs-bar-roll-current {
    margin-top: 2px;
  }
}
.crs-bar-roll-wrap {
  height: 30px;
  overflow: hidden;
  border-radius: 8px;
  position: relative;
}
.crs-bar-roll {
  height: 30px;
  display: inline-flex;
  flex-wrap: wrap;
  /*position: absolute;*/
  left: 0;
  transition: left 0.2s;
}
.crs-bar-roll-item {
  width: 20px;
  height: 10px;
  border-radius: 8px;
  background-color: #fff;
  background-size: cover;
  background-position: center;
  opacity: 0.85;
  cursor: pointer;
}
.crs-bar-roll-item:not(:last-child) {
  margin-right: 10px;
}

.btn_left{
  position: absolute;
  left: 0px;
  top: 50%;
  margin-top: -30px;
}
.btn_right{
  position: absolute;
  right: 0px;
  top: 50%;
  margin-top: -30px;
}