body {
    margin: 0;
    position: relative;
    height: 100vh;
}

* {
    box-sizing: border-box;
}

#login {
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    left: 0;
    margin: auto;
    height: 280px;
    width: 500px;
    text-align: center;
}

#login img {
    margin-bottom: 20px;
    width: 60%;
}

.hide {
    display: none;
}

img {
    width: 90%;
}

input[type="password"] {
    font-size: 1.1em;
    padding: 11px;
    width: 100%;
    text-align: center;
    border-radius: 3px;
    border: 1px solid #d6d6d6;
    transition: .2s;
    margin-bottom: 15px;
}

input[type="password"]:focus {
    border-color: #176E79;
    outline: none;
}

/*.remember {
    margin-top: 5px;
    color: #808080;
}
.remember input {
    position: relative;
    top: 1px;
}*/

button {
    background: #1d1f1f;
    padding: 11px 35px;
    text-transform: uppercase;
    transition: .2s;
    color: #fff;
    border: none;
    font-size: 1.1em;
}
button:hover, button:focus {
    background: #176E79;
    cursor: pointer;
}

.invalid-feedback {
    color: #ec0101;
    font-size: 1.2em;
}

@media only screen and (max-width: 650px) {
    #login {
        width: 90%;
    }
    button {
        font-size: .9em;
    }
}