.firstSection{
    margin-top: 60px;
}
.firstTitle{
    margin-top: 90px;
}
.mb0{
    margin-bottom: 0;
}
.mb7{
    margin-bottom: 7px;
}
.mb20{
    margin-bottom: 20px;
}
/*.mb10{*/
/*    margin-bottom: 10px;*/
/*}*/
.mb30{
    margin-bottom: 30px;
}
.mt0{
    margin-top: 0px;
}
.mt10{
    margin-top: 10px;
}
.mt20{
    margin-top: 20px;
}
.mt30{
    margin-top: 30px;
}
.borderBox{
    box-sizing: border-box;
}
.flex{
    display: flex;
}
.columnFlex{
    display: flex;
    flex-direction: column;
}
.flexJCSpaceBetween{
    justify-content: space-between;
}
.w50{
    width: 50%;
}
.w100{
    width: 100%;
}
/*.borderBottom{*/
/*    border-bottom: 1px solid BLACK;*/
/*}*/
@media only screen and (max-width:600px){
    .firstSection{
        margin-top: 70px;
    }
    .firstTitle{
        margin-top: 100px;
    }
    .flexColumnReversePhone{
        flex-direction: column-reverse;
    }
    .flexColumnPhone{
        flex-direction: column;
    }
    .w100Phone{
        width: 100%;
    }
}