.b3{
    background-color: rgb(44, 138, 83);
    color: white;
}
.d4{
    float: left;
    text-align: left;
}
.logo1{
    width: 50%;
    border-radius: 50px;
    margin-left: 15%;
}
h1{
    font-size: 25px;
    margin-right: 10%;
    text-align: center;
    margin-bottom: 10px;
    margin-top: 20px;

}
.voltar{
    background-color: white;
    margin-left: 45%;
    color: black;
    font-size: 23px;
    margin-top: 10px;
}
.voltar:hover{
    background-color: rgb(44, 138, 83);
}