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

.t1{
    background-image: url("desert.jpg");
    background-repeat: no-repeat;
    background-position: right center;
    background-size: auto 100%;
}

.t2{
    background-image: url("ATIVIDADE.jpg");
    background-repeat: no-repeat;
    background-position: right center;
    background-size: auto 100%;
}

.t3{
    background-image: url("koala.jpg");
    background-repeat: no-repeat;
    background-position: right center;
    background-size: auto 100%;
}

p{
    background-color: rgba(255,255,255,0.5);
    padding: 10px;
}