.box{
    display: flex;
    box-sizing: border-box;
}
.box-col{
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}
.flex{
    flex:1;
}
.center{
    justify-content: center;
    align-items: center;
}
.hcenter{
  align-items: center;
}
.vcenter{
  justify-content: center;
}

.w100{
  width: 100%;
}