body {
    font-family: Verdana, Helvetica, Arial, sans-serif;
    font-size:   13px;
    margin:      0 20px;
    min-width:   320px;
    background-color:black;
    }
.bg_blur {
    background-size:     cover !important;
    background-position: top center !important;
    width:               100%;
    height:              100%;
    position:            fixed;
    left:                0;
    top:                 0;
    background-repeat:   no-repeat !important;
    margin:              0;
    padding:             0;
    transform:           scale(1.02);
    z-index: -1;
    transition:          filter 1s ease-in-out;
    }
.bg_blur.select {
    filter:         blur(8px);
    -webkit-filter: blur(8px);
    }
.cotext {
    background-color: rgb(0 0 0 / 80%);
    padding:          20px;
    border-radius:    4px;
    color:            white;
    text-align:       center;
    font-size:        14px;
    max-width:        520px;
    line-height:      26px;
    opacity:          0;
    position:         absolute;
    top:              50%;
    left:             50%;
    transform:        translate(-50%, -50%);
    transition:       all 0.5s linear;
    }
.cotext button {
    margin:           20px 0 10px 0;
    background-color: #666;
    color:            white;
    padding:          10px 10px;
    font-size:        16px;
    border-radius:    4px;
    border:           0;
    cursor:           pointer;
    }
.cotext.select {
    opacity: 1;
    }