body {
     background-color: #eee;
}
 .form-signin {
     max-width: 420px;
     padding: 15px;
     margin: 0 auto;
}
 .form-signin .form-signin-heading, .form-signin .checkbox {
     margin-bottom: 10px;
}
 .form-signin .checkbox {
     font-weight: normal;
}
 .form-signin .form-control {
     position: relative;
     height: auto;
     -webkit-box-sizing: border-box;
     -moz-box-sizing: border-box;
     box-sizing: border-box;
     padding: 10px;
     font-size: 16px;
}
 .form-signin .form-control:focus {
     z-index: 2;
}
 .form-signin input[type="email"] {
     margin-bottom: -1px;
     border-bottom-right-radius: 0;
     border-bottom-left-radius: 0;
}
 .form-signin input[type="password"] {
     margin-bottom: 10px;
     border-top-left-radius: 0;
     border-top-right-radius: 0;
}
 canvas{
     display:block;
     vertical-align:bottom;
     position: fixed;
     z-index: -1;
}
 #particles-js{
     position:absolute;
     z-index:1;
     width: 100%;
     height: 100%;
     background-color: transparent;
     background-image: url('img/foto-home.jpg');
     background-size: cover;
     background-position: 50% 50%;
     background-repeat: no-repeat;
}