.top_element{
    height:35px;
    width:100%;
    color:white;
}

/*banner title*/
.title_box {
    width:268px;
    height: 162px;
    text-align: center;
}
.title_box img {
    margin-top: 50px;
}
.title_box #main_title {
    font-size: 30px;
    font-weight: 800;
}
.title_box #line {
    margin-top:5px;
    width:241px; 
    background: black;
    height: 5px;
}

#first_section {
    background-color: #ececec;
    width: 100%;
    height: auto;
    font-size: 18px;
    padding: 60px;
}

#s21 img {
    width: 80%;
}
#s22 {
    border-bottom: 2px solid black;
    font-size: 24px;
    font-weight: bold;
    text-align: center;
}
#s23 {
    margin-top: 40px;
    margin-bottom: 40px;
}

@media screen and   (max-width: 768px)  { 
    #first_section{
        padding: 0;
    }
}

@media screen and   (max-width: 480px)  { 
    .title_box #line {
        width:205px; 
    }
    .title_box {
        width:246px;
    }
    .title_box #main_title {
        font-size: 24px; 
    }

}