h1,h2,h3,h4,h5,h6,p{
    margin:0;
    padding:0;
}
ul,ol{
    list-style:none;
}
img{
    border:none;
    vertical-align:top;
}
a{
    text-decoration:none;
}
html,body{
    margin:0;
    padding:0;
    width: 100%;
    height: 100%;
}
body{
    font-size:14px;
    font-family:"微软雅黑";
    color:#333;
    background:#fff;
}

.flex{
  display: flex;
}
.align-center{
  align-items: center;
}
.justify-center{
  justify-content: center;
}
.flex-wrap{
  flex-wrap: wrap;
}
.flex-column{
  flex-direction: column;
}
.flex-row{
  flex-direction: row;
}
.flex-1{
  flex: 1;
}
.gap-10{
  gap: 10px;
}