.hero {
    padding: 30px 0px 30px 0px;
    margin-bottom: 20px;
    background: url(../images/banner.png) no-repeat center center;
    background-size: cover;
}

    .hero p {
        font-size: 25px;
        text-align: left;
        margin-left: 20%;
    }

    .hero h1 {
        font-size: 32px;
        color: #333;
    }

.start-btn {
    background: #ff4d4d;
    color: white;
    padding: 15px 80px;
    font-size: 18px;
    border: none;
    cursor: pointer;
    display: inline-block;
    text-decoration: none;
    border-radius: 10px;
    margin-left: 25%;
}

.about {
    text-align: left;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .container {
        width: 90%;
    }

    .hero p {
        font-size: 20px;
        text-align: center;
        margin-left: 5%;
    }
}