.box {
  width: 100%;
  height: 100%;
  background: #fff;
  font-size: 15px;
  color: black;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.content{
    flex: 1;
    box-sizing: border-box;
    padding: 0 12px;
    nz-tabset{
      height: 100%;
    }
    textarea{
      width: 100%;
      height: 100%;
    }
}
.btnbox{
  display: flex;
  justify-content: center;
  align-items: center;
  height: 52px;
}