body{
    font-size: 12px;
}
.centrado{
    text-align: center;
    position: absolute;
    border-radius: 15px;
    padding: 15px;
    width: 500px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
}

img{
    margin: 5px 50px 5px 15px;
}
.container > .row > a > button {
    padding: 6px 3px;
    margin: 15px 3px;
    border-radius: 10px;
}
.container > .row > button > a {
    color: white;
    text-decoration: none;
    font-style: italic;   
}

input {
    border-radius: 10px;
    padding: 10px;
}
.titulo{
    padding: 10px;
}
input:invalid, textarea:invalid {
    background:red;
}
.menu{
    margin-bottom: 7px;
}
.button{
    margin-bottom: 10px;
}
.menu {
    border-radius: 15px;
    padding: 5px 5px;
    margin: 8px 0;
    border: 1px solid blue;
    width: 100%;
    text-shadow: 1px 1px 1px blue;
}
.boton3d {
    border: 0;
    color: blue;
    font-size: 20px;
    font-family: sans-serif;
    padding: 5px 0;
    background: -moz-linear-gradient(center top, #eaeaea 0%, #999999 100%) repeat scroll 0 0 transparent;
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #eaeaea), color-stop(100%, #999999));
    -moz-border-radius: 10px;
    -webkit-border-radius: 10px;
    text-shadow: 1px 1px 1px blue;
    -moz-box-shadow: 0 6px 0 #eaea;
    -webkit-box-shadow: 0 6px 0 #999999;
}
.boton3d:active {
    position: relative;
    top: 3px;
    -moz-box-shadow: 0 3px 0 #eaea;
    -webkit-box-shadow: 0 3px 0 #999999;
    background: -moz-linear-gradient(center top, #eaeaea 0%, #999999 100%) repeat scroll 0 0 transparent;
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #eaeaea), color-stop(100%, #999999));
}