.istp-section {
    margin: 20px 0;
}

.istp-box {
    border: 3px solid lightblue;
    text-align: center;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 4px;
    transition: background 0.3s;
}

.istp-box:first-child {
    border: 2.5px solid lightblue;
}

.istp-box a {
    color: green;
    font-weight: bold;
    text-decoration: none;
}