用::before伪元素，在文字前面画一个圆形

.title-box{
    margin-top: 20px;
    margin-left: 41px;
    & span{
        font-size: 22px;
        color: #1CDBFE;
        font-family: Source Han Sans CN;
    };
    & span::before{
        content: "";
        position: absolute;
        display: block;
        top:23px;
        left: 17px;
        width: 13px;
        height: 27px;
        background-color: #1CDBFE;
        border-radius: 6px;
        
 
    }
 
}