.btn {
    
      position: absolute;
    margin-top: -44px;
    margin-left: 73%;
    padding: 4px 4px;
    background: linear-gradient(rgb(0, 0, 0), rgba(0, 0, 0, 0.7));
    border-radius: 5px;
    border: 1px solid #fff;
    cursor: pointer;
    transition: all 0.3s ease-out;
    color: white;
    font-size: 11px;

}
.fallo {
    background: #ce0101;
    color: white;
    padding: 6px;
    text-align: center;
    border-radius: 28px;
}
#full-screen-background-image {
    z-index: -999;
    position: fixed;
    min-width: 100%;
    min-height: 100%;
    top: 50%;
    left: 50%;
    transform: translateX(-50%) translateY(-50%);
}
.form-4 {
    background: rgb(255, 255, 255);
    border: 1px solid #333;
    border-radius: 8px;
    width: 300px;
    margin: 10% auto;
    padding: 20px;
    position: relative;
}
.form-4 h1 {
    font-size: 22px;
    padding-bottom: 20px;
}
.form-4 input[type=text], .form-4 input[type=password] {
    width: 95%;
    padding: 8px 4px 8px 10px;
    margin-bottom: 15px;
    border: 1px solid #4e3043;
    /* Fallback */
    border: 1px solid rgba(78, 48, 67, 0.8);
    background: rgba(0, 0, 0, 0.5);
    border-radius: 2px;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.2), inset 0 1px 1px rgba(0, 0, 0, 0.1);
    -webkit-transition: all 0.3s ease-out;
    -moz-transition: all 0.3s ease-out;
    -ms-transition: all 0.3s ease-out;
    -o-transition: all 0.3s ease-out;
    transition: all 0.3s ease-out;
    font-family: 'Raleway', 'Lato', Arial, sans-serif;
    color: white;
    font-size: 13px;
}
.form-4 input::-webkit-input-placeholder {
    color: #333;
    text-shadow: 0 1px 0 rgba(0, 0, 0, 0.15);
}
.form-4 input:-moz-placeholder {
    color: #333;
    text-shadow: 0 1px 0 rgba(0, 0, 0, 0.15);
}
.form-4 input:-ms-input-placeholder {
    color: #333;
    text-shadow: 0 1px 0 rgba(0, 0, 0, 0.15);
}
.form-4 input[type=text]:hover, .form-4 input[type=password]:hover {
    border-color: #333;
}
.form-4 input[type=text]:focus, .form-4 input[type=password]:focus, .form-4 input[type=submit]:focus {}
/* Fallback */

.no-boxshadow .form-4 input[type=text]:focus, .no-boxshadow .form-4 input[type=password]:focus {
    outline: 1px solid white;
}
.form-4 input[type=submit] {
    /* Size and position */
    width: 100%;
    padding: 8px 5px;
    background: linear-gradient(rgb(89, 127, 114), rgba(0, 0, 0, 0.7));
    border-radius: 5px;
    border: 1px solid #fff;
    cursor: pointer;
    transition: all 0.3s ease-out;
    color: white;
    font-size: 16px;
}
.form-4 input[type=submit]:hover {
    background: linear-gradient(rgb(24, 51, 46), rgb(0, 0, 0));
}
/* Fallback */

.no-boxshadow .form-4 input[type=submit]:hover {
    background: #594642;
}
.form-4 label {
    display: none;
    padding: 0 0 5px 2px;
    cursor: pointer;
}
.form-4 label:hover~input {
    border-color: #333;
}
.no-placeholder .form-4 label {
    display: block;
}
@media (max-width:768px) {
    .form-4 {
        background: rgba(255, 255, 255, 0.6);
        border: 1px solid #333;
        border-radius: 8px;
        width: 60%;
        margin: 40% auto;
        padding: 20px;
        position: relative;
    }
}