/*class="test test-1 scrollbar"*/
html {

  width: 100%;
  height: 100%;
  overflow-y: hidden;
  overflow-x: hidden;
}
body {

  width: 100%;
  height: 100%;
  overflow-y: hidden;
  overflow-x: hidden;
  margin: 0px;
}
form {
  width: 100%;
  height: 100%;
}
.test {
  width: 50px;
  height: 200px;
  overflow: auto;
  float: left;
  margin: 5px;
  border: none;
}
.scrollbar {
  margin: 0 auto;
  height: 100%;
  width: 100%;
  overflow-y: auto;
  overflow-x: auto;
}
.test-1::-webkit-scrollbar {
  /*滚动条整体样式*/
  width: 10px; /*高宽分别对应横竖滚动条的尺寸*/
  height: 10px;
  z-index:999999;
}
.test-1::-webkit-scrollbar-thumb {
  /*滚动条里面小方块*/
  border-radius: 8px;
  box-shadow: inset 0 0 5px rgba(0, 0, 0, 0);
  background: #cccccc;
}
.test-1::-webkit-scrollbar-track {
  /*滚动条里面轨道*/
  box-shadow: inset 0 0 5px rgba(0, 0, 0, 0);
  border-radius: 8px;
  /* background   : ; */
}