formulario.css

* {
    /* seleciona todos os elementos da pag html -->*/
    margin: 0;
    padding: 0;
}

#titulo {
    font-family: sans-serif;
    color: #380b61;
    margin-left: 7%;
}

#subtitulo {
    font-family: sans-serif;
    color: #380b61;
    margin-left: 10%;
}

#check {
    display: inline-block;
}

fieldset {
    border: 0;

}

body {
    background-color: #F0F8FF;
    font-family: sans-serif;
    font-size: 1em;
    color: #59429d;
    margin-left: 36%;
    margin-top: 2%;
    justify-content: center;
}

input,
select,
textarea,
button {
    border-radius: 5px;
    font-family: sans-serif;
    font-size: 1em;
    color: #59429d;
}

.grupo:before,
.grupo:after {
    display: table;
}

/* Elementos de classe "grupo" no estado da pseudoclasse "after" */
.grupo:after {
    clear: both;
}

.campo {
    margin-bottom: 1em;
}

.campo label {
    margin-bottom: 0.2em;
    color: #59429d;
    display: block;
}

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

.campo input[type="text"],
.campo input[type="email"],
.campo select,
.campo textarea {
    padding: 0.2em;
    border: 1px solid #59429d;
    box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.2);
    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: #59429d;
    border: 0;
    margin-bottom: 1em;
    color: #ffffff;
    padding: 0.2em 0.6em;
    box-shadow: 2px 2px 2px rgba(0, 0, 0, 0.2);
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.5);
    position: absolute;
    top: 90%;
    left: 50%;
    margin-right: -50%;
    transform: translate(-50%, -50%);
}

/* Elemento de classe "botao" com o estado da pseudoclasse "hover" */
.botao:hover {
    background: #CCBBFF;
    box-shadow: inset 2px 2px 2px rgba(0, 0, 0, 0.2);
    text-shadow: none;
}

/* Elementos de classe botão e de tag <select> */
.botao,
select {
    cursor: pointer;
}