body {
    height: 100vh;
}

.login_con {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    margin: auto;
}

.login_con img {
    margin: auto;
}
h1 {
    padding: 50px 0 20px 0;
    border-bottom: 3px solid #212529;
}

.input_group {
    flex-direction: column;
}

.input_group input {
    margin-bottom: 10px;
    width: 100%;
    height: 60px;
    padding-left: 50px;
}

.input_group button {
    width: 100%;
    margin: 30px 0;
    border-radius: 50px;
}

.comment {
    padding: 50px 0;
    border-top: 1px solid #ecebee;
}

.id_input {
    background-image: url(../img/icon/login_b.svg);
    background-size: auto;
    background-position: 20px 50%;
}

.pw_input {
    background-image: url(../img/icon/password.svg);
    background-size: auto;
    background-position: 20px 50%;
}

@media screen and (max-width: 550px) {
    .login_con {
        width: 90%;
        margin: auto;
    }

    .input_group {
        padding: 20px 0;
    }

    .comment {
        padding: 30px 0;
    }

    .input_group button {
        margin: 20px;
    }

    h1 {
        padding: 30px 0 10px 0;
    }
}