.b_box,
.s_box {
    font-weight: bold;
    font-size: 80%;
}
.b_box a,
.s_box a {
    font-weight: normal;
    text-decoration: none;
}
    .b_box {
        width: 98%;
    }
    .s_box {
        width: 48%;
    }
    .b_box img,
    .s_box img {
        width: 99%;
        border: 1px solid gray;
        height: auto;
    }
@media only screen and (min-width: 769px){
    .b_box,
    .s_box {
        margin-left: 1%;
        display: inline-block;
        vertical-align: top;
    }
    html .youtube_share {
        margin-left: 10%;
    }
    .pr_fields img {
        width: 48%;
        margin-left: 1%;
        height: auto;
        margin-bottom: 10px;
    }
}
@media only screen and (min-width: 1200px){
    address {
        clear: both;
    }
    .main_container {
        width: 730px;
        float: left;
    }
    .pr_fields {
        width: 160px;
        float: left;
    }
    .pr_fields img {
        width: 160px;
        height: auto;
        margin-bottom: 10px;
    }
    .b_box,
    .s_box {
        margin-left: 1%;
        display: inline-block;
    }
    .b_box img,
    .s_box img {
        width: 99%;
        border: 1px solid gray;
        height: auto;
    }
    html .youtube_share {
        margin-left: 10%;
    }
}