body, html {
            margin: 0;
            padding: 0;
            height: 100%;
            font-family: Arial, sans-serif;
        }
        
        .banner {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            height: 100vh;
            width: 100%;
            overflow: hidden;
            background-image: url('office.jpg');
            background-size: cover;
            background-position: center top;
        }
        
        .banner-text {
            text-align: center;
            color: #fff;
            background-color: #ffffffd1;
            padding: 20px;
        }
        
        .banner-text h1 {
            font-size: 2.5em;
            font-family: 'Poppins', sans-serif;
            font-weight: 800;
            margin: 0;
        }
        
        .catalog-item img {
            width: 100px;
            aspect-ratio: 3/2;
            object-fit: cover;
        }
        
        .banner-text p {
            font-size: 1.5em;
            margin: 0;
            font-weight: 600;
        }
        
        /* Media Query for Large Devices */
        @media (min-width: 768px) {
            .catalog-item img {
                width: 200px;
                aspect-ratio: 3/2;
                object-fit: cover;
            }
            .banner {
                align-items: flex-start;
            }
            .banner-text {
                text-align: left;
                padding-left: 10%;
                width: 50%;
                background: transparent;
            }
            .banner-text h1 {
                font-size: 2.5em;
                margin-bottom: 50px;
            }
            .catalog{
                padding-left: 9%;
            }
        }
        
        .banner-text a {
            text-decoration: none;
        }
        
        .catalog {
            text-align: center;
            margin-top: 20px;
        }
    
        .catalog-item {
            display: inline-block;
            margin: 10px;
        }
    
        .catalog-item a {
            display: block;
            padding: 10px 20px;
            background-color: #159b94;
            color: #fff;
            text-decoration: none;
            border-radius: 5px;
        }
    
        .catalog-item a:hover {
            background-color: #515050;
        }
        
       .float{
        	position:fixed;
        	width:60px;
        	height:60px;
        	bottom:40px;
        	right:40px;
        	background-color:#25d366;
        	color:#FFF;
        	border-radius:50px;
        	text-align:center;
          font-size:30px;
        	box-shadow: 2px 2px 3px #999;
          z-index:100;
        }
        
        .my-float{
        	margin-top:16px;
        }
        
        .btn-outline-success{
            border-color:#159b94;
            color:#fff;
            background:#159b94;
        }