body {

    font-family: Arial, Helvetica, sans-serif;

    margin: 0;

   background: url(imagen.jpg);

    background-size: cover;

    background-attachment: fixed;

}

* {

    box-sizing: border-box;

}

.contenedor{

    width: 100%;

    padding: 15px;

}

.formulario{

    background: #fff;

    margin-top: 150px;

    padding: 3px;

}

h1{
	text-align: center;
	color: #996600;
	font-size: 40px;

}

input[type="text"],

input[type="password"]{

    font-size: 20px;

    width: 82%;

    padding: 10px;

    border: none;

}

.input-contenedor{

    margin-bottom: 15px;

    border: 1px solid #aaa;

}

.icon{

    min-width: 50px;

    text-align: center;

    color: #999;

}

.button{

    border: none;

    width: 100%;

    color: white;

    font-size: 20px;

    background:  #aaa;

    padding: 15px 20px;

    border-radius: 5px;

    cursor: pointer;

}

.button:hover{

    background: cadetblue;

}

p{

    text-align: center;

}

.link{

    text-decoration: none;

      color: #1a2537;

    font-weight: 600;

}

.link:hover{

     color: cadetblue;

}

@media(min-width:768px)

{

    .formulario{

        margin: auto;

        width: 500px;

        margin-top: 150px;

        border-radius: 2%;

    }

}