.flex {
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;
}
/* 主轴为垂直方向 */
.flex-col {
	-webkit-box-orient: vertical;
	-webkit-flex-direction: column;
	-ms-flex-direction: column;
	flex-direction: column;
}
/* 主轴为水平方向  */
.flex-row {
	-webkit-box-orient: horizontal;
	-webkit-flex-direction: row;
	-ms-flex-direction: row;
	flex-direction: row;
}
/* 交叉轴上顶端对齐 */
.items-start {
	-webkit-align-items: flex-start;
	-webkit-box-align: start;
	-ms-flex-align: start;
	align-items: flex-start;
}
/* 交叉轴上居中对齐 */
.items-center {
	-webkit-align-items: center;
	-webkit-box-align: center;
	-ms-flex-align: center;
	align-items: center;
}
/* 交叉轴上底端对齐 */
.items-end {
	-webkit-align-items: flex-end;
	-webkit-box-align: end;
	-ms-flex-align: end;
	align-items: flex-end;
}
/* 主轴上顶端对齐 */
.justify-start {
	-webkit-box-pack: start;
	-webkit-justify-content: flex-start;
	-ms-flex-pack: start;
	justify-content: flex-start;
}
/* 主轴上居中 */
.justify-center {
	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: center;
	justify-content: center;
}
/* 主轴上两端对齐 */
.justify-between {
	-webkit-box-pack: justify;
	-webkit-justify-content: space-between;
	-ms-flex-pack: justify;
	justify-content: space-between;
}
/* 主轴上底端对齐 */
/* 右对齐 */
.justify-end {
	-webkit-box-pack: end;
	-webkit-justify-content: flex-end;
	-ms-flex-pack: end;
	justify-content: flex-end;
}
.flex-1 {
	-webkit-box-flex: 1;
	-webkit-flex: 1;
	-ms-flex: 1;
	flex: 1;
}

.flex-2 {
	-webkit-box-flex: 2;
	-webkit-flex: 2;
	-ms-flex: 2;
	flex: 2;
}

.flex-3 {
	-webkit-box-flex: 3;
	-webkit-flex: 3;
	-ms-flex: 3;
	flex: 3;
}
/*
 * flex布局样式说明
 * @example :  flex-row-justify-center
 * 四个单词依次为：flex布局 、  主轴方向（水平或者垂直）、  主轴上的对齐方式 、 交叉轴上的对齐方式
 */
.flex-between {
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;

	-webkit-box-orient: horizontal;
	-webkit-flex-direction: row;
	-ms-flex-direction: row;
	flex-direction: row;

	-webkit-box-pack: justify;
	-webkit-justify-content: space-between;
	-ms-flex-pack: justify;
	justify-content: space-between;

	-webkit-align-items: center;
	-webkit-box-align: center;
	-ms-flex-align: center;
	align-items: center;
}
.flex-end {
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;

	-webkit-box-orient: horizontal;
	-webkit-flex-direction: row;
	-ms-flex-direction: row;
	flex-direction: row;

	-webkit-box-pack: justify;
	-webkit-justify-content: space-between;
	-ms-flex-pack: justify;
	justify-content: space-between;

	-webkit-align-items: flex-end;
	-webkit-box-align: end;
	-ms-flex-align: end;
	align-items: flex-end;
}
.flex-start {
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;

	-webkit-box-orient: horizontal;
	-webkit-flex-direction: row;
	-ms-flex-direction: row;
	flex-direction: row;

	-webkit-box-pack: start;
	-webkit-justify-content: flex-start;
	-ms-flex-pack: start;
	justify-content: flex-start;

	-webkit-align-items: center;
	-webkit-box-align: center;
	-ms-flex-align: center;
	align-items: center;
}
.flex-center {
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;

	-webkit-box-orient: horizontal;
	-webkit-flex-direction: row;
	-ms-flex-direction: row;
	flex-direction: row;

	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: center;
	justify-content: center;

	-webkit-align-items: center;
	-webkit-box-align: center;
	-ms-flex-align: center;
	align-items: center;
}
.flex-row-center-start {
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;

	-webkit-box-orient: horizontal;
	-webkit-flex-direction: row;
	-ms-flex-direction: row;
	flex-direction: row;

	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: center;
	justify-content: center;

	-webkit-align-items: flex-start;
	-webkit-box-align: start;
	-ms-flex-align: start;
	align-items: flex-start;
}
.flex-row-center-end {
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;

	-webkit-box-orient: horizontal;
	-webkit-flex-direction: row;
	-ms-flex-direction: row;
	flex-direction: row;

	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: center;
	justify-content: center;

	-webkit-align-items: flex-end;
	-webkit-box-align: end;
	-ms-flex-align: end;
	align-items: flex-end;
}
.flex-column-center-center {
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;

	-webkit-box-orient: vertical;
	-webkit-flex-direction: column;
	-ms-flex-direction: column;
	flex-direction: column;

	-webkit-box-pack: center;
	-webkit-justify-content: center;
	-ms-flex-pack: center;
	justify-content: center;

	-webkit-align-items: center;
	-webkit-box-align: center;
	-ms-flex-align: center;
	align-items: center;
}
.flex-column-end-center {
	display: -webkit-box;
	display: -webkit-flex;
	display: -ms-flexbox;
	display: flex;

	-webkit-box-orient: vertical;
	-webkit-flex-direction: column;
	-ms-flex-direction: column;
	flex-direction: column;

	-webkit-box-pack: end;
	-webkit-justify-content: flex-end;
	-ms-flex-pack: end;
	justify-content: flex-end;

	-webkit-align-items: center;
	-webkit-box-align: center;
	-ms-flex-align: center;
	align-items: center;
}