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

.flex-v {
    -webkit-box-orient: vertical;
    -webkit-flex-direction: column;
    -ms-flex-direction: column;
    flex-direction: column;
}

.flex-1 {
    -webkit-box-flex: 1;
    -webkit-flex: 1;
    -ms-flex: 1;
    flex: 1;
}

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

.flex-pack-center {
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}

.flex-pack-justify {
    -webkit-box-pack: justify;
    -webkit-justify-content: space-between;
    -ms-flex-pack: justify;
    justify-content: space-between;
}
.flex-third{
	/*水平垂直居中*/
	display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
    
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}
.flex-second-w
{
	/*水平居中*/
	display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    
    -webkit-box-pack: center;
    -webkit-justify-content: center;
    -ms-flex-pack: center;
    justify-content: center;
}
.flex-second-h
{
	/*垂直居中*/
	display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    
    -webkit-box-align: center;
    -webkit-align-items: center;
    -ms-flex-align: center;
    align-items: center;
}