html, body{
    padding: 0;
    margin: 0;
}
main{
    height: 100vh;
    max-height: 1050px;
    background-position: top left;
    background-size: contain;
    color: #333a39;
}
.page-header-image {
    background-image: url(../img/bg_login.jpg);
    background-size: cover;
    background-position: top left;
    background-repeat: no-repeat;
    width: 100%;
    height: 100%;
    background-color: #e0e3ec;
}

@media (max-width:480px) { 
    .page-header-image {
        background-color: #dadde6;
    }
}
.btn-primary {
    color: #fff;
    background-color: #4f928c;
    border-color: #6bada7;
}
.btn-primary:hover{
    background-color: #77cac2;
    border-color: #93cec9;
}
.logo{
    margin-top: 25%;
}
a {
    text-decoration: none;
}
a:hover{
    color: #77cac2;
}
form{
    width: 80%;    
    margin: 0 9%;
    z-index: 999;
}
.alert-danger {
    color: #fff;
    background-color: #842029;
    border: none;
    position: absolute;
    width: 100%;
    text-align: center;
    border-radius: 0;
}    
.alert-success {
    color: #fff;
    background-color: #0b471f;
    border: none;
    position: absolute;
    width: 100%;
    text-align: center;
    border-radius: 0;
}    
.alert-dismissible .close {
    position: absolute;
    top: 0;
    padding: .75rem 1.25rem;
    color: inherit;
    right: 0;
    background: transparent;
    border: none;
    font-size: 1.5rem;    
}