.mask-layer * {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
/*	display: flex;justify-content: center;align-items: center;*/
}
.helper-layer * {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    display: flex;justify-content: center;align-items: center;
}


.mask-layer {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 202020;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

.mask-layer .mask-layer-close {
    position: absolute;
    bottom: 40px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: url(../img/closeicon.png) no-repeat center center;
    background-size: cover;
    cursor: pointer;
}
.helper-layer-close {
    position: absolute;
    bottom: 40px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: url(../img/closeicon.png) no-repeat center center;
    background-size: cover;
    cursor: pointer;
}

.mask-layer-black {
    width: 100%;
    height: 100%;
    background: #000;
    opacity: .75;
    position: absolute;
    top: 0;
    left: 0;
}

.mask-layer-container {
    width: 100%;
    height: 100%;
    position: relative;
}


.mask-layer-container .img-pre {
    width: 100px;
    height: 100px;
    border-radius: 100%;
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translate(0, -50%);
    -webkit-transform: translate(0, -50%);
    -moz-transform: translate(0, -50%);
    -ms-transform: translate(0, -50%);
    -o-transform: translate(0, -50%);
    background: url(../img/prev.png) no-repeat center center;
    cursor: pointer;
}

.mask-layer-container .img-pre:hover {
    background: url(../img/prev_h.png) no-repeat center center;
    background-color: rgba(0, 0, 0, 0.3);
}

.mask-layer-container .img-next {
    width: 100px;
    height: 100px;
    position: absolute;
    border-radius: 100%;
    cursor: pointer;
    background: url(../img/next.png) no-repeat center center;
    right: 20px;
    top: 50%;
    transform: translate(0, -50%);
    -webkit-transform: translate(0, -50%);
    -moz-transform: translate(0, -50%);
    -ms-transform: translate(0, -50%);
    -o-transform: translate(0, -50%);
}

.mask-layer-container .img-next:hover {
    background: url(../img/next_h.png) no-repeat center center;
    background-color: rgba(0, 0, 0, 0.3);
}

.mask-layer-container .mask-layer-imgbox {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;

      display: flex;
  justify-content: center; /* 水平居中 */
  align-items: center;     /* 垂直居中 */
  height: 100vh;           /* 需要指定容器高度 */
}

.mask-layer-imgbox .mask-layer-imgName {
    z-index: 999;
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translate(-50%);
    -webkit-transform: translate(-50%);
    -moz-transform: translate(-50%);
    -ms-transform: translate(-50%);
    -o-transform: translate(-50%);
    height: 30px;
    width: 630px;
    padding: 5px;
    color: #ffffff;
    background: rgba(0, 0, 0, 0.3);
    transition: all linear 0.3s;
}

.mask-layer-imgbox:hover .mask-layer-imgName {
    bottom: 0px;
}

.mask-layer-imgbox .layer-img-box {
    position: relative;
    width: 100%;
    height: 100%;
}
.layer-img-box>p{
    position: absolute;
    transform-origin: center;
    -webkit-transform-origin: center;
    -moz-transform-origin: center;
    -ms-transform-origin: center;
    -o-transform-origin: center;
    width: 100%;
    height: 100%;
    -webkit-margin-before: 0;
    -webkit-margin-after: 0;
    cursor: move;
    left: 0;
    top: 0;
}

.mask-layer-imgbox .layer-img-box img {
    position: absolute;
    max-width: 100%;
    max-height: 100%;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) scale(1);
    -webkit-transform: translate(-50%, -50%) scale(1);
    -moz-transform: translate(-50%, -50%) scale(1);
    -ms-transform: translate(-50%, -50%) scale(1);
    -o-transform: translate(-50%, -50%) scale(1);
}

.mask-layer-imgbox .layer-img-box img:hover {
    cursor: move;
}

.zoomImg-hide-box {
    display: none !important;
}
/*右键菜单*/
.mask-layer  .contextmenu {
    list-style: none;
    display: none;
    position: absolute;
    width: 180px;
    background: #FFFFFF;
    border-radius: 5px;
    z-index: 99;
    border: 1px solid #333;
}

.mask-layer .contextmenu li {
    transition: ease 0.3s;
}

.mask-layer .contextmenu li:hover {
    background: #333333;
}

.mask-layer .contextmenu li>a {
    display: block;
    padding: 10px 10px 10px 35px;
    color: #000000;
    text-decoration: none;
    transition: ease 0.3s;
}
.mask-layer .contextmenu li>a.clockwise{
   background: url(../img/right_rotate.png) no-repeat left 5px center; 
   background-size:24px 24px ;
}
.contextmenu li>a.clockwise:hover{
   background: url(../img/right_rotate_h.png) no-repeat left 5px center; 
   background-size:24px 24px ;
}
.mask-layer .contextmenu li>a.counterClockwise{
   background: url(../img/left_rotate.png) no-repeat left 5px center; 
   background-size:24px 24px ;
}
.contextmenu li>a.counterClockwise:hover{
   background: url(../img/left_rotate_h.png) no-repeat left 5px center; 
   background-size:24px 24px ;
}
.mask-layer .contextmenu li>a.downimg{
   background: url(../img/down.png) no-repeat left 5px center; 
   background-size:24px 24px ;
}
.contextmenu li>a.downimg:hover{
   background: url(../img/down_h.png) no-repeat left 5px center; 
   background-size:24px 24px ;
}


.mask-layer .contextmenu li:hover>a {
    color: #FFFFFF;
}
.mask-layer .contextmenu .menu-parend:hover .menu-child {
    display: block;
}