.body-background{
  position: fixed;
  top:0;
  left:0;
  width:100%;
  height:100%;
  background:{
    size:100% 100%;
    position: center center;
    repeat:no-repeat;
  }
  z-index: -1;
}
.border-box{
  box-sizing: border-box;
}
.flex{
  display:flex;
}
.row{
  box-sizing: border-box;
  width:100%;
  display:flex;
  flex-wrap: wrap;
}
.col-12{
  box-sizing: border-box;
  flex: 0 0 100%;
}
.col-8{
  box-sizing: border-box;
  flex: 0 0 66.66%;
}
.col-6{
  box-sizing: border-box;
  flex: 0 0 50%;
}
.col-4{
  box-sizing: border-box;
  flex: 0 0 33.33%;
}
.col-3{
  box-sizing: border-box;
  flex: 0 0 25%;
}
.col{
  flex:1;
}
.col-auto{
  flex:auto;
}

.align-center{
  align-items: center;
}
.justify-center{
  justify-content: center;
}
.justify-between{
  justify-content: space-between;
}
.text-center{
  text-align: center;
}

@for $i from 1 through 5 {
  .mb-#{$i} {
    margin-bottom: #{$i}0rpx;
  }
  .mr-#{$i} {
    margin-right: #{$i}0rpx;
  }
  .ml-#{$i} {
    margin-left: #{$i}0rpx;
  }
  .mt-#{$i} {
    margin-top: #{$i}0rpx;
  }
  .pb-#{$i} {
    padding-bottom: #{$i}0rpx;
  }
  .pr-#{$i} {
    padding-right: #{$i}0rpx;
  }
  .pl-#{$i} {
    padding-left: #{$i}0rpx;
  }
  .pt-#{$i} {
    padding-top: #{$i}0rpx;
  }
}