body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
header {
    background: url('img/HeaderBanner.jpg') no-repeat center center;
    background-size: cover;
    height: 300px;
    color: white;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}
header h1 {
    font-size: 3em;
    background: rgba(0, 0, 0, 0.5);
    padding: 20px;
}
.services {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    padding: 50px 0;
    background: #f4f4f4;
}
.service {
    text-align: center;
    width: 45%;
    margin-bottom: 20px;
}
@media (min-width: 768px) {
    .service {
        width: 20%;
    }
}
@media (max-width: 767px) {
    header {
        height: 200px;
    }
    header h1 {
        font-size: 2em;
        padding: 10px;
    }
    .service img {
        width: 80px;
        height: 80px;
    }
    .service h2 {
        font-size: 1.2em;
        margin: 10px 0;
    }
    .service p {
        font-size: 0.9em;
    }
}