当一行有三个元素的时候直接加个伪类就行，三个以上就需要加占位元素了
<div class="hot-content">
<div class="hotList"></div>
<div class="pick"></div>
<div class="pick"></div>
一行显示五个，多余换行
.hot-content{
width: 100%;
display:flex;
justify-content: space-between;
flex-wrap: wrap;
text-align: justify;
}
.hot-content:after{
content: '';
width: 19%;
}
.pick{
width: 19%;
overflow: hidden;
}
.hotList{
width: 19%;
content: '';
overflow: hidden;
/* margin-right: 1.25%; */
border-radius: 5px;
margin-bottom: 1rem;
}
四列加一个pick,五个加俩，一次类推