@media only screen and (max-width: 1000px) {
    
    .row{
        display:flex;
        flex-direction: row;
    }
    
    .clickable{
        cursor: pointer;
        transition: color 0.2s linear;
    }
    .clickable_dark{
        color:#222222;
        cursor: pointer;
        transition: color 0.2s linear;
    }
    .clickable_dark:hover{
        color:#7b7b7b
    }
    
    .white{
        color:#FFFFFF
    }
    
    .dark{
        background-color:gray;
        color:white;
    }
    
    .mute{
        user-select:none
    }
    
    
    .default_text{
        font-weight: 300;
        font-size:14px;
        line-height:28px;
    }
    
    ._block_title {
        font-size: 23px;
        line-height: 55px;
        font-weight: 400;
        word-break: break-all;
      }
    ._block_title1 {
        font-size: 23px;
        font-weight: 400;
        line-height: 55px;
        word-break: break-all;
        margin-top: 10px;
        margin-bottom: 10px;
    }
    ._block_title2 {
        font-size: 14px;
        color: rgb(150, 0, 0);
        font-weight: 400;
        word-break: break-all;
        margin-top: 10px;
        margin-bottom: 5px;
    }
    
    .page_wrap{
        overflow-y: hidden;
        overflow-x: hidden;
        position: relative;
        width: 100%;
        min-height: 500px;
        background-color:white;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .head_image{
        width: 100%;
        height: 500px;
        object-fit: cover;
        object-position: center;
    }
    
    ._page_block {
        background-color:white;
        position: relative;
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items:center;
        justify-content:center;
        height: calc(0.4 * ( 100vw - ( 100vw - 100% )));
        max-height: 1000px;
        padding-top: 50px;
        padding-bottom: 50px;
    }
    
    ._page_block._reverse {
        flex-direction: column;
        background-color:#f1f1f1;
        align-items:center;
        justify-content:center;
        padding-top: 50px;
        padding-bottom: 50px;
    }
    
    ._half_piece {
        position: relative;
        max-width: 800px;
        width: 100%;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        height: 100%;
        padding-top: 2%;
        padding-bottom: 2%;
        text-overflow: ellipsis;
    }
    ._half_piece>.portraint_img{
        position: relative;
        max-width: 800px;
        width: 30%;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        height: 100%;
        padding-top: 2%;
        padding-bottom: 2%;
        text-overflow: ellipsis;
    }
    
    ._half_piece._left{
        /* padding-left: 20px; */
        padding-right: 20px;
        flex-direction: column;
        justify-content: center;
    }
    
    ._half_piece div{
        text-overflow: ellipsis;
    }
    
    ._text_left{
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        padding-right: 10%;
        /* padding-left: 10%; */
        text-align: justify;
    }
    
    ._text_right{
        display: flex;
        flex-direction: column;
        padding-right: 10%;
        padding-left: 10% !important;
        text-align: justify;
    }
    
    video{
        /* max-height: 400px; */
        object-fit: contain;
        max-width: 100%;
    }
    
}