.pt-10 {
    padding-top: 10px;
}

.pt-20 {
    padding-top: 20px;
}

.pt-30 {
    padding-top: 30px;
}

.pt-40 {
    padding-top: 40px;
}

.pt-50 {
    padding-top: 50px;
}

.pt-60 {
    padding-top: 60px;
}

.pt-70 {
    padding-top: 70px;
}

.pt-80 {
    padding-top: 80px;
}

.pt-90 {
    padding-top: 90px;
}

.pt-100 {
    padding-top: 100px;
}



html, body{
  min-height: 100%;
}



body {
    background-image: url(cara.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-attachment: fixed;
    background-position: center; 
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Roboto', sans-serif;
    color: #fff;
    text-align: left;
}

H1, h3 {
    font-weight: 600;
    font-style: normal;
    font-size: 36px;
    line-height: 1.4em;
    text-transform: none;
    letter-spacing: 0em;
    color: rgba(255,255,255,.8);
}

h3 {
    font-size: 45px;
    font-weight: 400;
}


.logo {
    position: absolute;
    top: 4%;
    left: 60px;
    height: 100px;
}

.logo img {
    height: 100%;
}

.conteiner {
    margin-top: -100px;
    position: absolute;
    top: 50%;
    left: 60px;
}

.button {
    background-color: #fff; /* Green */
    border: none;
    color: #000;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    border-radius: 25px;
    font-family: Roboto;
    font-weight: 400;
    font-style: normal;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: .2em;
    margin-right: 20px;
    cursor: pointer;
    
}

@media only screen and (max-width: 576px) {

      
    h1, h3 {
        font-size: 20px;
        font-weight: 400;
    }
    
    h3 {
        font-size: 25px;
        font-weight: 200;
    }
    
    .pt-40 {
        padding-top: 10px;
    }
    
    .button {
        margin-right: 5px;
        display: block;
        margin-top: 10px;
    
}

  }