.water a, .gas a {
    width: 20%;
    height: 100px;
    background-color: #3F7398;
    border-radius: 10px;
    margin: 0 auto;
    margin-top: 40px;
    color: white;
    font-size: 26px;
    display: block;
    text-align: center;
    line-height: 100px;
    margin-bottom: 40px;
}

.gas a {
    background-color: #E64748;
}
@media only screen and (max-width: 768px) {
    footer, .head{
        display:none;
    }
    .water a, .gas a {
        width: 80%;
    }
}