style.css

*{
  margin: 0;
  padding: 0;  
}

#titulo{
    font-family: arial;
    color: rgba(17, 1, 61, 0.774);
    margin-left: -18%;
    font-size: 66px;
}

#subtitulo{
    font-family: arial;
    color: rgba(17, 1, 61, 0.774);
    margin-left: 2%;
    font-size: 33px;
}

form{
    margin-left: 2%;
}

fieldset{
    border: 0;
}

body{
    background-color: rgb(160, 168, 204);
    font-family: arial;
    font-size: 1em;
    color: rgba(0, 255, 179, 0.589);
    margin-left: 33%;
    margin-top: 2%;
    justify-content: center;
}

input, select, textarea, button{
    border-radius: 5px;
}

.campo{
    margin-bottom: 1em;
}

.campo label{
    margin-bottom: 0.2em;
    color:rgb(8, 29, 100);
    display: block;
}

fieldset.grupo .campo{
    float: left;
    margin-right: 1em;
}

.campo input[type="text"], .campo input[type="number"], .campo select, .campo textarea{
    padding: 0.2em;
    border: 1px solid rgba(76, 0, 255, 0.747);
    box-shadow: 2px 2px 2px rgba(3, 10, 10, 0.822);
    display: block;
}

.campo select option{
    padding-right: 1em;
}

.campo input:focus, .campo select:focus, .campo textarea:focus{
    background: #E0E0F8;
}

#botao{
    font-size: 1.2em;
    background: rgb(0, 255, 200);
    border: 1;
    color: rgb(24, 0, 63);
    padding: 0.2em 0.6em;
    box-shadow: 2px 2px 2px rgb(0, 0, 0.2);
    text-shadow: 1px 1px 1px rgb(0, 0, 0.6);
    position: line;

}

#botao:hover {
    background: #ccbbff;
    box-shadow: inset 2px 2px 2px rgba(0, 0, 0, 0.2);
    text-shadow: none;
}


/* Responsividade do site*/

@media screen and (max-width: 740px){
    #botao{
        float: none;
        padding: 0.1em 0.4em;
        font-size: 1.0em;
    }
    #titulo{
        padding: -0.2em -0.2em;
    }
}