.carousel-fade .carousel-inner .item {
    opacity: .1;
    -webkit-transition-property: opacity;
    -moz-transition-property: opacity;
    -o-transition-property: opacity;
    transition-property: opacity;
}
.carousel-fade .carousel-inner .active {
    opacity: 1;
}
.carousel-fade .carousel-inner .active.left,
.carousel-fade .carousel-inner .active.right {
    left: 0;
    opacity: 0;
    z-index: 1;
}
.carousel-fade .carousel-inner .next.left,
.carousel-fade .carousel-inner .prev.right {
    opacity: 1;
}
.carousel-fade .carousel-control {
    z-index: 2;
}
html,
body,
.carousel,
.carousel-inner,
.carousel-inner .item {
    max-height: 100%;
}
.item:nth-child(1) {
    background: #00abed;
}
.item:nth-child(2) {
    background: #ff8f00;
}
.item:nth-child(3) {
    background: #1e765b;
}
.item:nth-child(4) {
    background: #7a1fa0;
}

/*  custom fade animation for carousel  */
.carousel-fade .item {
      opacity: 0;
      -webkit-transition: opacity 0.5s ease-in-out;
      -moz-transition: opacity 0.5s ease-in-out;
      -ms-transition: opacity 0.5s ease-in-out;
      -o-transition: opacity 0.5s ease-in-out;
      transition: opacity 0.5s ease-in-out;
      left: 0 !important;
}

.carousel-fade .active {
      opacity: 1 !important;
}

.carousel-fade .left {
      opacity: 0 !important;
      -webkit-transition: opacity 0.5s ease-out !important;
      -moz-transition: opacity 0.5s ease-out !important;
      -ms-transition: opacity 0.5s ease-out !important;
      -o-transition: opacity 0.5s ease-out !important;
      transition: opacity 0.5s ease-out !important;
}

.carousel-fade .carousel-control {
  opacity: 1 !important;
}

.carousel-control {
    position: absolute;
    top:50%;
    width: 40px;
    height: 40px;
    margin-top: -10px;
    font-size: 50px;
    font-weight: 400;

    border: 0px;
    -webkit-border-radius: 21px;
    -moz-border-radius: 21px;
    border-radius: 21px;
    opacity: 0.5;
    background-color:transparent;
}