/* flex布局兼容 START */
.flex {
    /* 设置为flex盒子 */
    display: box;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
}

.flex_column {
    /* 垂直排列 */
    -webkit-box-orient: vertical;
    -webkit-flex-direction: column;
    -moz-flex-direction: column;
    -ms-flex-direction: column;
    -o-flex-direction: column;
    flex-direction: column;
}

.flex_wrap {
    /* 允许换行 */
    -webkit-box-lines: multiple;
    -webkit-flex-wrap: wrap;
    -moz-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    -o-flex-wrap: wrap;
    flex-wrap: wrap;
}

.flex_center {
    /* 设置为flex盒子 */
    display: box;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;

    /* 水平方向上居中 */
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -moz-justify-content: center;
    -ms-justify-content: center;
    -o-justify-content: center;
    justify-content: center;

    /* 垂直方向上居中 */
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-align-items: center;
    -ms-align-items: center;
    -o-align-items: center;
    align-items: center;

}

.flex_row_center {
    /* 水平方向上居中 */
    -ms-flex-pack: center;
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -moz-justify-content: center;
    -ms-justify-content: center;
    -o-justify-content: center;
    justify-content: center;
}

.flex_row_start {
    /* 水平方向上居左 */
    -webkit-box-pack: start;
    -webkit-justify-content: flex-start;
    -moz-justify-content: flex-start;
    -ms-justify-content: flex-start;
    -o-justify-content: flex-start;
    justify-content: flex-start;
}

.flex_row_end {
    /* 水平方向上居右 */
    -webkit-box-pack: end;
    -webkit-justify-content: flex-end;
    -moz-justify-content: flex-end;
    -ms-justify-content: flex-end;
    -o-justify-content: flex-end;
    justify-content: flex-end;
}

.flex_row_justify {
    /* 水平方向上等间距排列 */
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    -moz-justify-content: space-between;
    -ms-justify-content: space-between;
    -o-justify-content: space-between;
    justify-content: space-between;
}

.flex_column_center {
    /* 垂直方向上居中 */
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-align-items: center;
    -ms-align-items: center;
    -o-align-items: center;
    align-items: center;
}

.flex_column_start {
    /* 垂直方向上居上 */
    -webkit-box-align: start;
    -webkit-align-items: flex-start;
    -moz-align-items: flex-start;
    -ms-align-items: flex-start;
    -o-align-items: flex-start;
    align-items: flex-start;
}

.flex_column_end {
    /* 垂直方向上居下 */
    -webkit-box-align: end;
    -webkit-align-items: flex-end;
    -moz-align-items: flex-end;
    -ms-align-items: flex-end;
    -o-align-items: flex-end;
    align-items: flex-end;
}

.flex1 {
    /* 占据1份大小 */
    -webkit-box-flex: 1;
    -moz-box-flex: 1;
    -webkit-flex: 1;
    -ms-flex: 1;
    flex: 1;
}

.flex_rank_1 {
    /* 排列等级 */
    -webkit-box-ordinal-group: 1;
    -moz-box-ordinal-group: 1;
    -ms-flex-order: 1;
    -webkit-order: 1;
    order: 1;
}

.flex_rank_2 {
    /* 排列等级 */
    -webkit-box-ordinal-group: 2;
    -moz-box-ordinal-group: 2;
    -ms-flex-order: 2;
    -webkit-order: 2;
    order: 2;
}



/* 图片居中 */
.picture_container {
    position: relative;
    overflow: hidden;
    background: none;
}

.picture_container img {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    margin: auto;
    -webkit-transition: all 1s linear;
    -moz-transition: all 1s linear;
    -o-transition: all 1s linear;
    transition: all 1s linear;
}




[class*=animate_] {
    /* 动画时间，动画开始前的状态 */
    -webkit-animation-duration: 1.5s;
    -moz-animation-duration: 1.5s;
    -o-animation-duration: 1.5s;
    animation-duration: 1.5s;

    opacity: 0;
    -webkit-animation-fill-mode: forwards;
    -moz-animation-fill-mode: forwards;
    -o-animation-fill-mode: forwards;
    animation-fill-mode: forwards;
}