<style>
    .layout-main {
        font-family: Arial, sans-serif;
        background-color: #f3f4f6;
        text-align: center;
        padding: 20px;
    }
    .wrapper-box {
        max-width: 1200px;
        margin: auto;
    }
    .title-header {
        font-size: 2em;
        color: #333;
        margin-bottom: 20px;
    }
    .grid-layout {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
    @media (max-width: 900px) {
        .grid-layout {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 600px) {
        .grid-layout {
            grid-template-columns: repeat(1, 1fr);
        }
    }
    .content-box {
        background: white;
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        text-align: center;
    }
    .icon-style {
        font-size: 40px;
        color: #1e40af;
    }
    .sub-title {
        font-size: 1.5em;
        margin: 10px 0;
    }
    .text-muted {
        color: #555;
    }
    .whatsapp-button {
        position: fixed;
        bottom: 20px;
        right: 20px;
        background-color: #25d366;
        padding: 10px;
        border-radius: 50%;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
        cursor: pointer;
    }
    .whatsapp-button img {
        width: 50px;
        height: 50px;
    }
    .whatsapp-tooltip {
        position: absolute;
        bottom: 60px;
        right: 0;
        background: #25d366;
        color: white;
        padding: 5px 10px;
        border-radius: 5px;
        display: none;
    }
    .whatsapp-button:hover .whatsapp-tooltip {
        display: block;
    }
</style>