.img_section_01_01._student{
    background: url('../img/student_img_section_01_01.png') 50% no-repeat;
    background-size: 622px 200px;
    widows: 622px;
    height: 200px;
    margin: 50px auto 0;
}
.step-column-col-item._left{
    width: 800px;
}
.step-column-col-item-cont-text{
    font-size: 16px;
}
.step-column-col-item._right.p-up{
    margin-top: -132px;
}
.step-column-col.has-baloon:before{
    background-size: 130px 130px;
    height: 130px;
    right: 115px;
    bottom: 5px;
    width: 130px;
}
@media only screen and (max-width: 768px){
    .step-column-col.has-baloon:before{
      background-size: 108px 120.5px;
      height: 120.5px;
      right: 0px;
      bottom: 129px;
      width: 108px;
    }
    .step-column-col-item-cont-text{
        font-size: 15px;
    }
    .img_section_01_01._student{
        background-size: 100%;
        height: 0;
        padding-top: 29.115756%;
        width: 90%;
    }
    .step-column-col-item._left{
        width: 100% !important;
    }
    .mv_description{
        padding-top: 25px;
    }
    .step-column-col-item._right.p-up{
        margin-top: 0px;
    }
}