.box-gracias {
    text-align: center;
    color: #000;
    width: 100%;
}
.box-aviso{
	background: #f6f6f6;
    width: 90%;
    margin: 30px auto;
    box-shadow: rgba(0, 0, 0, 0.74902) 3px 2px 37px -4px;
    text-align: justify;
    padding: 40px 30px;
}
.box-aviso h1{
	font-size: 3em;
    font-weight: bold;
    color: #223972;
    text-align: center;
    margin-bottom: 25px;
}
.box-aviso p{
	margin-bottom: 20px;
    font-size: 20px;
    font-weight: 100;
}
.box-back{
	text-align: center;
}