.abouthistory{
    width:100%;
    background:#fafafa;
    margin: 30px 0;
}
.historycontent{
    width: 95%;
    margin:auto;
    padding:50px 0;
}
.doublecircle{
    width: 156px;
    height: 70px;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}
.bigcircle{
    width: 70px;
    height: 70px;
    border-radius: 35px;
    border: 15px solid #ccc;
    box-sizing: border-box;
    line-height: 40px;
    text-align: center;
    font-size:20px;
    font-weight: bold;
    color:#ccc;
    transition: all 0.3s;
}

.mincircle{
    width: 36px;
    height: 36px;
    border-radius: 18px;
    background: #ccc;
    margin-left: -2px;
    transition: all 0.3s;
}
.cirlink{
    width: 50px;
    height: 70px;
    background: #ccc;
    margin-left: -4px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s;
}
.cirtoplink{
    width: 50px;
    height: 34px;
    background: #fafafa;
    border-bottom-right-radius: 15px 8px;
    border-bottom-left-radius: 35px 17px;
}
.cirbottomlink{
    width: 50px;
    height: 34px;
    background: #fafafa;
    border-top-left-radius: 35px 17px;
    border-top-right-radius: 15px 6px;
}

.historitem{
    width:100%;
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    align-items: flex-start;
    cursor: pointer;
}
.historytxarea{
    width:calc(50% - 118px);
}
.historytitle{
    width:100%;
    height:40px;
    line-height: 70px;
    font-size:20px;
    font-weight: bold;
    color: #aaa;
    padding: 0 15px;
    box-sizing: border-box;
}
.historydexc{
    width: 100%;
    line-height: 25px;
    font-size: 14px;
    padding: 15px;
    box-sizing: border-box;
    color:#ccc;
    transition: all 0.3s;
}
.hleft{
    justify-content: flex-start;
}
.alignright{
    text-align: right;
}
.cfilp{
    transform: rotateY(180deg);
    margin-left: -1px;
    margin-right: -4px;
}
.hisactive .historytitle,
.historitem:hover .historytitle{
    color:#FF3C00;
}
.hisactive .mincircle,
.hisactive .cirlink,
.historitem:hover .mincircle,
.historitem:hover .cirlink{
    background:#FF3C00;
}
.hisactive .bigcircle,
.historitem:hover .bigcircle{
    border-color: #FF3C00;
    color:#555;
}
.hisactive .historydexc,
.historitem:hover .historydexc{
    color:#666;
}
.hsubject{
    width:100%;
    text-align:center;
    margin-bottom:50px;
}
.hsubjectbg{
    font-size: 50px;
    color:#eee;
    font-weight: bold;
}
.hsubjecttx{
    font-size: 35px;
    font-weight: bold;
    color: #555;
    margin-top:-40px;
}

@media screen and (max-width:600px) {
    .doublecircle{
        width: 95px;
        height: 40px;
    }
    .bigcircle{
        width: 40px;
        height: 40px;
        border-radius: 20px;
        border: 6px solid #ccc;
        line-height: 30px;
        font-size: 15px;
    }
    .cirlink{
        width: 38px;
        height: 38px;
        margin-left: -2px;
    }
    .cirtoplink{
        width: 40px;
        height: 19px;
        margin: -1px -1px 0;
        border-bottom-right-radius: 14px 7px;
        border-bottom-left-radius: 26px 11px;
    }
    .cirbottomlink{
        width: 40px;
        height: 19px;
        margin: 0 -1px -1px;
        border-top-left-radius: 26px 11px;
        border-top-right-radius: 14px 6px;
    }
    .mincircle{
        width: 20px;
        height: 20px;
        border-radius: 10px;
        margin-left: -2px;
    }
    .cfilp{
        margin-left: -1px;
        margin-right: -2px;
    }
    .historytxarea{
        width: calc(50% - 78px);
    }
}