style.css

body {
    background: url(assets/wpp.gif);
    background-color: rgb(150, 164, 144);
    color: #ffffff;
    text-align: center;
    font-size: 17px;
}

.navbar {
    background-color: rgb(0, 0, 0);
    overflow: hidden;
    text-align: center;
}

.navbar a {
    display: inline-block;
    color: rgb(255, 255, 255);
    text-decoration: none;
    padding: 14px 20px;
}

.navbar a:hover {
    background-color: #ffffff;
    color: rgb(255, 255, 255);
}

header {
    padding: 20px;
    text-align: center;
    font-size: 32px;
}

@media screen and (max-width: 600px) {
    .navbar a {
        display: block;
        padding: 10px;
    }

    header {
        font-size: 24px;
    }
}

@media screen and (min-width: 601px) and (max-width: 1024px) {
    .navbar a {
        padding: 12px 16px;
    }

    header {
        font-size: 28px;
    }
}

.direitos,
.minha-foto {
    border-radius: 50%;
    text-align: center;
    height: 60px;
    font-size: small;
    margin-top: 50px;
}

.errad_img {
    height: 500px;
    width: auto;
    margin-left: 100px;

}

.text_errad {
    margin-left: 100px;
    font-size: 19px;
}

.oportu_titulo {
    margin-right: 800px;
}

.opor_img {
    width: 700px;
    margin-left: 40px;
}

.tabela_econ {
    margin-top: 400px;
}

.tabela {
    margin-top: 80px;
}

.cadeiasdevalor img {
    width: 900px;
}