html,
body {
    height: 100%;
}

body {
    display: flex;
    align-items: center;
    background-color: #f5f5f5;
    position: relative;
}

.home-background {
    background-image: url(../img/bang_khen.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}

.wrapper {
    width: 100%;
    max-width: 370px;
    padding: 15px;
    margin: auto;
    position: relative;
}

    .wrapper .checkbox {
        font-weight: 400;
    }

    .wrapper .form-control {
        position: relative;
        box-sizing: border-box;
        height: auto;
        padding: 10px;
        font-size: 16px;
    }

        .wrapper .form-control:focus {
            z-index: 2;
        }

    .wrapper input[type="email"] {
        margin-bottom: -1px;
        border-bottom-right-radius: 0;
        border-bottom-left-radius: 0;
    }

    .wrapper input[type="password"] {
        margin-bottom: 10px;
        border-top-left-radius: 0;
        border-top-right-radius: 0;
    }


.left-col-background {
    background-image: url(../img/bang_khen.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}