// 宽高动态设置
// 如果只传一个值，那么高=宽
@mixin set_w_h($width: 100%, $height: $width) {
  width: $width;
  height: $height;
}

// flex、居中
@mixin flex_center {
  display: flex;
  justify-content: center;
  align-items: center;
}

// flex、居中、竖向排列
@mixin flex_center_column {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

@mixin flex_between_center_column {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-direction: column;
}

// flex、左右居中
@mixin flex_content_center {
  display: flex;
  justify-content: center;
}

@mixin flex_item_center {
  display: flex;
  align-items: center;
}

@mixin flex_between_center {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@mixin flex_around_center {
  display: flex;
  justify-content: space-around;
  align-items: center;
}

@mixin flex_center_end {
  display: flex;
  justify-content: center;
  align-items: flex-end;
}

@mixin flex_start_end {
  display: flex;
  align-items: flex-end;
}

// position 左右居中
@mixin position_content_center {
  left: 0;
  right: 0;
  margin: auto;
}

@mixin position_item_center {
  top: 50%;
  transform: translateY(-50%);
}

.ripple {
  position: relative;
  //隐藏溢出的径向渐变背景
  overflow: hidden;
  &::after {
    content: "";
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    //设置径向渐变
    background-image: radial-gradient(circle, #666 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10, 10);
    opacity: 0;
    transition: transform 0.3s, opacity 0.5s;
  }
  &:active:after {
    transform: scale(0, 0);
    opacity: 0.3;
    //设置初始状态
    transition: 0s;
  }
}