*{
    box-sizing: border-box;
}
html{
    font-size: 62.5%;
}



h1 strong{
    color: rgb(190, 12, 12);
    font-weight: bold;
    font-size: 20px;
    border-bottom: 1px solid rgb(190, 12, 12);
}
#br_pc{
    display: none;
}
/* PC用css -----------------------------------------*/
@media screen and (min-width:960px){
    h1 strong{
        font-size: 16px;
    }
    #br_pc{
        display: block;
    }
    .text-box{
        order: 1;
        margin: -101px 0 0 -180px;
    }
}