*{
    margin: 0;
    padding: 0;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.cl {
    clear: both;
}

.cf:after {
    content: '';
    display: block;
    clear: both;
}

.hidden {
    display: none;
}

.sub-top {
    margin-top: 54px;
}

#history_main {
    width: 1000px;
    margin: 0 auto;
    padding-left: 10rem;
}

.history_contents {
    width: 100%;
    margin-bottom: 150px;
}

.history_title {
    font-size: 2.3rem;
    color: #666666;
    letter-spacing: -0.05rem;
    margin: 0 auto;
    margin-bottom: 50px;
}

.history_title img {
    display: block;
    width: 95px !important;
    float: left;
    margin-right: 30px;
    /* margin-top: 25px; */
}


.history_title span {
    font-size: 1.8rem;
    color: #232323;
}

.history_con {
    position: relative;
    padding-left: 18.5rem;
    padding-bottom: 3rem;
    margin: 0 auto;
}

.history_con h4 {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    padding-right: 6rem;
    border-right: 1px solid #ddd;
    font-size: 2rem;
    font-weight: 600;
}

ul>li.history_con:last-child{
    padding-bottom: 0;
}

.history_con h4:after {
    content: "";
    position: absolute;
    right: -10px;
    top: 10px;
    display: block;
    width: 20px;
    height: 20px;
    /* border-radius: 50%; */
    background: #cf6464;
}

.history_con div dl {
    position: relative;
    padding-left: 1rem;
    width: 100%;
    font-size: 1.2rem;
    line-height: 2.3rem;
}

.history_con div dt {
    float: left;
    font-size: 1.5rem;
    font-weight: 600;
}

.history_con div dd {
    padding-left: 3rem;
    letter-spacing: -0.1rem;
}

@media screen and (max-width : 999px){
    #history_main{
        width: 93%;
        padding: 0;
    }

    .history_con{
        padding-left: 15rem;
    }
}

@media screen and (max-width : 650px){

    #history_main{
        width: 88%;
        padding: 0;
    }

    .history_contents {
        width: 100%;
        margin-bottom: 50px;
    }

    .history_con{
        padding: 0;
        padding-bottom: 1rem;
        border-left: 1px solid #ddd;
    }

    .history_con h4{
        position: static;
        padding: 0;
        padding-left: 10%;
        border-right: none;
    }

    .history_con h4:after {
        content: "";
        position: absolute;
        left: -5px;
        top: 13px;
        width: 10px;
        height: 10px;
        font-size: 1.5rem;
    }

    .history_title {
        font-size: 1.1rem;
        margin-bottom: 20px;
    }
    
    .history_title img {
        margin-right: 10px;
        margin-top: 5px;
    }
    
    .history_title span {
        font-size: 1rem;
    }

    .history_con div{
        padding-left: 18%;
    }

    .history_con div dt {
        font-size: 1.2em;
        color: #aaa;
    }

    .history_con div dl {
        font-size: 1rem;
        line-height: 1.5rem;
    }


}