.card-content {
width: 1100px;
margin-top: 20px;
-moz-column-count: 2; /* Firefox */
-webkit-column-count: 2; /* Safari 和 Chrome */
column-count: 2;
-moz-column-gap: 5px;
-webkit-column-gap: 5px;
column-gap: 5px
}
.cards {
margin: 0px 0 10px 0;
-moz-page-break-inside: avoid;
-webkit-column-break-inside: avoid;
break-inside: avoid; /*break-inside: avoid; 避免元素内部断行并产生新列*/
-webkit-backface-visibility:hidden; 避免元素闪烁*
}
