// css
.index-li:nth-child(4n+1){
.circle{
border: 1px solid #FE6490;
}
}
.index-li:nth-child(4n+2){
.circle{
border: 1px solid #48E298;
}
}
.index-li:nth-child(4n+3){
.circle{
border: 1px solid #34C1FF;
}
}
.index-li:nth-child(4n+4){
.circle{
border: 1px solid #FFC573;
}
}
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