/*清除浮动破坏带来的塌陷问题*/
/*清除浮动的兼容IE*/
.clearfloat {
	zoom: 1;
}
.clearfloat:after {
	display:block;
	clear:both;
	content:"";
	visibility:hidden;
	height:0;
}

.flex {
    display: flex;
}

.flex-ac {
    align-items: center;
}

.flex-jusb {
    justify-content: space-between;
}

.flex-juc {
    justify-content: center;
}

.flex-jucend {
    justify-content: flex-end;
}

img {
    width: 100%;
}

.p20 {
    padding-bottom: 20px;
}