サムネイルをセンタリングして正方形にきりとる
.cover_img
{
display: inline-block;
width: 98px;
height: 98px;
background-repeat: no-repeat;
background-position: center center;
background-size: cover;
}
.cover_img
{
display: inline-block;
width: 98px;
height: 98px;
background-repeat: no-repeat;
background-position: center center;
background-size: cover;
}