/*flex box布局

只有在父元素高度明确指定的情况下,子元素才能继承父元素的高度,
但是min-height是模糊的,不明确的.
故最后计算出来的高度往往是"auto"而不是期望的100%,在这个问题中.
*/
body {
  overflow-x: hidden;
  overflow-y: scroll;
  min-height: 100%;
  height: 100%;
}

/*flex 布局
middle-wrap flex =1
使得footer永远固定在底部*/
.Wrap {
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.Header {
  width: 100%;
  height: 130px;
}

/*content区域*/
.WrapMiddle {
  /*flex 1 保证了footer的固定*/
  flex: 1;
  width: 100%;
  font-size: 0;
  min-height: 100%;
  position: relative;
  display: flex;
  flex-direction: row;
}

.OffCanvas-Active .Left,
.OffCanvas-Active .Middle {
  transform: translate3d(200px, 0, 0);
  transition: transform .3s;
}

.Left {
  background-color: #03A66A;
  font-size: .9rem;
  transition: transform .3s;
}

@media (min-width: 40rem) {
  .Left {
    width: 12.5%;
    left: 0;
    position: relative;
  }
}

.Middle {
  transition: transform .3s;
  font-size: .9rem;
}

@media (min-width: 40rem) {
  .Middle {
    display: inline-block;
    width: 75%;
    padding: 0 2.5rem;
  }
}

.Right {
  width: 100%;
  font-size: .9rem;
}

@media (min-width: 40rem) {
  .Right {
    width: 12.5%;
  }
}

.Footer {
  height: 100px;
  width: 100%;
  text-align: center;
   background-color: whitesmoke;
  margin: 1rem;
  border-radius: .25rem;

}