.modal {
    display: none;
    background: #337AB7;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: 99999;
}
.modal_vis {
    display: block;
}
.body_block {
    overflow: hidden;
    margin-right: 17px;
}
#close_modal1, #close_modal2, #close_modal3, #close_modal4, #close_modal5, #close_modal6, #close_modal7, #close_modal8, #close_modal9, #close_modal10, #close_modal11 {
    color: #BFE2FF;
    font-size: 40px;
    font-weight: bold;
    font-family: Times, sans-serif;
    border-radius: 50%;
    border: 4px solid #BFE2FF;
    width: 50px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    margin: 20px;
    cursor: pointer;
    position: absolute;
    right: 0;
    transform: rotate(45deg);
    transition: all 0.6s;
    box-sizing: content-box;
}
#close_modal1:hover, #close_modal2:hover, #close_modal3:hover, #close_modal4:hover, #close_modal5:hover, #close_modal6:hover, #close_modal7:hover, #close_modal8:hover, #close_modal9:hover, #close_modal10:hover, #close_modal11:hover {
    color: #FFF;
    transform: rotate(135deg);
}
.modal_txt {
    box-shadow: 0 4px 12px rgba(0,0,0,0.2), 0 16px 20px rgba(0,0,0,0.2);
    background: #FFF;
    padding: 30px;
    margin: 100px auto;
    max-width: 800px;
}