* {
    margin: 0;
    padding: 0;
    font-family: Helvetica;
}

body {
    background: #fafafa;
}

h1,
h2,
h3 {
    color: #d5232e;
    text-align: center;
    margin: 10px auto;
}

.contenido .interno {
    max-width: 900px;
    width: 98%;
    padding: 35px 1%;
    margin: 0 auto;
    background: white;
}

.contenido .interno>p {
    font-size: 18px;
    color: #999;
    text-align: center;
    line-height: 1.35em;
    margin-bottom: 40px;
}

.renglon {
    margin: 25px auto;
}

.oculto {
    display: none;
}

.unmedio {
    float: left;
    width: 48%;
    padding: 1%;
}

.untercio {
    float: left;
    width: 31%;
    padding: 1%;
}

.untercio:nth-child(3) {
    width: 32%;
}

.clear {
    clear: both;
}

label {
    display: block;
    font-size: 0.85em;
    margin: 0 0 5px 10px;
    font-weight: bold;
}

input,
select,
textarea {
    display: block;
    width: 90%;
    font-size: 16px;
    padding: 10px 20px;
    border-radius: 5px;
    border: 1px solid #dadada;
    margin-bottom: 15px;
}

input,
select {
    max-width: 320px;
}

.btnenviar {
    text-align: center;
}

input[type=submit],
input[type=reset] {
    cursor: pointer;
    display: inline-block;
    border: 1px solid #d5232e;
    max-width: 128px;
    margin: 15px;
}

input[type=submit] {
    color: white;
    background: #d5232e;
}

input[type=reset] {
    color: #d5232e;
    background: white;
}

input[type=reset]:hover,
input[type=submit]:hover {
    background: #ef999f;
}

textarea {
    min-height: 128px;
}

.alerta {
    padding: 15px 30px;
    margin: 10px 25px;
    border-radius: 7px;
    line-height: 1.35em;
}

.alerta.info {
    color: #004085;
    background-color: #cce5ff;
    border-color: #b8daff;
    font-size: 0.8em;
}

.alerta.exito {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alerta.warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeeba;
}