h1 {
    text-align: center;
}

h2 {
    font-size: 25px;
    font-weight: normal;
}

.hvac {
    height: 300px;
    width: 700px;
    display: block;
    margin: 0 auto;
}

.descript-container {
    max-width: 1000px;
    margin: 0 auto; 
}