body * {
  box-sizing: border-box;
  flex-shrink: 0;
}
body {
  font-family: PingFangSC-Regular, Roboto, Helvetica Neue, Helvetica, Tahoma,
    Arial, PingFang SC-Light, Microsoft YaHei;
}
input {
  background-color: transparent;
  border: 0;
}
button {
  margin: 0;
  padding: 0;
  border: 1px solid transparent;
  outline: none;
  background-color: transparent;
}

button:active {
  opacity: 0.6;
}
.flex-col {
  display: flex;
  flex-direction: column;
}
.flex-row {
  display: flex;
  flex-direction: row;
}
.justify-start {
  display: flex;
  justify-content: flex-start;
}
.justify-center {
  display: flex;
  justify-content: center;
}

.justify-end {
  display: flex;
  justify-content: flex-end;
}
.justify-evenly {
  display: flex;
  justify-content: space-evenly;
}
.justify-around {
  display: flex;
  justify-content: space-around;
}
.justify-between {
  display: flex;
  justify-content: space-between;
}
.align-start {
  display: flex;
  align-items: flex-start;
}
.align-center {
  display: flex;
  align-items: center;
}
.align-end {
  display: flex;
  align-items: flex-end;
}
.shade-phone{
  display: inline;
  padding:10px;
  background:rgba(0,0,0,0.7);
  position: fixed;
  top:50%;
  left:0;
  right:0;
  z-index: 102;
  font-size:14px;
  color:#fff;
  text-align: center;
  width:140px;
  margin:0 auto;
  border-radius: 8px;
}

/* 模态框（Modal）的基本样式 */
.modal {
  display: none; /* 默认隐藏 */
  position: fixed; /* 固定位置 */
  z-index: 1; /* 置于顶层 */
  left: 0;
  top: 0;
  width: 100%; /* 全宽 */
  height: 100%; /* 全高 */
  overflow: auto; /* 启用滚动 */
  background-color: rgb(0,0,0); /* 背景颜色 */
  background-color: rgba(0,0,0,0.4); /* 背景颜色带透明度 */
}

/* 模态内容框 */
.modal-content {
  background-color: #fefefe;
  margin: 15% auto; /* 15% 从顶部和自动水平居中 */
  padding: 20px;
  border: 1px solid #888;
  width: 80%; /* 可调节宽度 */
}

/* 关闭按钮 */
.close {
  color: #aaa;
  float: right;
  font-size: 28px;
  font-weight: bold;
}

.close:hover,
.close:focus {
  color: black;
  text-decoration: none;
  cursor: pointer;
}