* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        .dbi-body {
            font-family: 'Arial', sans-serif;
            background-color: #f5f5f5;
            color: #333;
            line-height: 1.6;
            padding: 20px;
        }
        
        .dbi-cnt {
            margin: 0 auto;
            background-color: #fff;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            width: 100%;
        }
        
        .dbi-ttl {
            font-size: 2.5em;
            margin-bottom: 20px;
            color: #2c3e50;
            text-align: center;
        }
        
        .dbi-subttl {
            font-size: 1.5em;
            margin-bottom: 15px;
            color: #34495e;
            text-align: center;
            padding-left: 35vw;
        }
        
        .dbi-txt {
            font-size: 1.2em;
            line-height: 1.6;
            color: #555;
        }
        
        .dbi-sgn-cnt {
            text-align: center;
            margin-bottom: 20px;
            width: auto;
            height: auto;
        }
        
        .dbi-img-1 {
            width: 40vw;
            height: 80vh;
            border-radius: 8px;
        }
        
        .dbi-img-2 {
            width: 40vw;
            height: 80vh;
            border-radius: 8px;
        }
        
        .dbi-img-3 {
            width: 40vw;
            height: 80vh;
            border-radius: 8px;
        }