* {
  margin: 0;
  padding: 0;
}

.zero {
  width: 0;
  height: 0;
  margin-top: 80px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);

}

.center {
  position: absolute;
}

.pa-item {
  position: absolute;
}

.pa-item .p-i-text {
  user-select:none;
  cursor: pointer;
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 10px;
  background-image: url(../images/rpnodebg.png);
  background-repeat: no-repeat;
  box-sizing: border-box;
  vertical-align: middle;
  color: #fff;
  font-size: 15px;
  text-align: center;
  z-index: 999;
}

.pa-item .p-i-original, .pa-item .p-i-constitute, .pa-item .p-i-more {
  position: absolute;  
}

.pa-item .p-i-original .p-i-o-title, .pa-item .p-i-constitute .p-i-o-title, .pa-item .p-i-m-title{
  position: absolute;
  display: inline-block;
  background-image: url(../images/original.png);
  background-repeat: no-repeat;
  background-size: 50px 50px;
  width: 50px;
  height: 50px;
  line-height: 50px;
  color: #F7AC41;
  -webkit-user-select: none;
    -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  font-size: 12px;
  text-align: center;
  z-index: 100;
}

.p-i-o-title-original-more {
  left: -40px;
  top: 0;
}

.p-i-o-title-more {
  top: 40px;
  left: 40px;
}

.p-i-o-title-only {
  top: 10px;
  left: -20px;
}

.pa-item .p-i-o-fork, .pa-item .p-i-o-tree, .p-i-link, .p-i-m-more {
  position: absolute;
  -webkit-user-drag:none;
  user-select:none;
}

.p-i-link {
  user-select:none;
  -webkit-user-drag:none;
  transform-origin: 0px 13px;
}

.pa-item .p-i-o-text, .pa-item .p-i-c-text {
  user-select:none;
  position: absolute;
}

.pa-item .p-i-o-text .p-i-o-con {
  white-space:pre-wrap;
  position: absolute;
  padding: 10px 7px;
  min-width: 130px;
  max-height: 100px;
  overflow-y: auto;
  background: linear-gradient(0deg, #FFD633, #FEA813);
  border: 1px solid #FFC662;
  border-radius: 5px;
  color: #fff;
  -webkit-user-select: none;
    -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  font-size: 9px;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  -ms-border-radius: 5px;
  -o-border-radius: 5px;
  z-index: 1000;
}

.center .pa-item .p-i-text {
  width: 100px;
  height: 100px;
  background-size: 100px 100px;
}

.parent {
  position: absolute;
}

.parent .pa-item .p-i-text {
  width: 115px;
  height: 115px;
  background-size: 115px 115px;
}

.child {
  position: absolute;
}

.child .pa-item .p-i-text {
  width: 90px;
  height: 90px;
  background-size: 90px 90px;
}


/* 滚动条样式 */
::-webkit-scrollbar {
  width: 7px;
  height: 5px;
  border-radius:5px;
  -webkit-border-radius:  5px;
}
::-webkit-scrollbar-track-piece {
  background-color: #ffff;
  border-radius:5px;
  -webkit-border-radius:  5px;
}
::-webkit-scrollbar-thumb:vertical {
  height: 5px;
  background: -webkit-linear-gradient(#3CC79B, #58B5E5);
  border-radius: 5px;
  -webkit-border-radius:  5px;
}
::-webkit-scrollbar-thumb:horizontal {
  width: 7px;
  background: -webkit-linear-gradient(#3CC79B, #58B5E5);
  border-radius:  5px;
  -webkit-border-radius: 5px;
}