html {
            background-color: #000;
        }
        
        body {
            color: #fff;
        }
        
        .login_form {
            margin-top: 20px;
        }
        
        .bg_img {
            width: 200px;
        }
        
        .contact-title {
            margin-top: -50px;
        }
        
        .form {
            font-family: Arial, sans-serif;
            line-height: 1.5rem;
            box-sizing: border-box;
            border: 1px solid rgb(204, 204, 204);
            border-radius: 5px;
            padding: 10px 5px;
            width: 300px;
            margin-right: 5px;
            margin-bottom: 10px;
        }
        
        #auth_btn {
            margin-top: 20px;
            margin-right: 20px;
            background-color: rgb(38, 38, 105);
            color: #fff;
            border-radius: 3em;
            padding: 8px 15px;
            border: none;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
            width: 8.5em;
        }
        
        #regist_btn {
            margin-top: 20px;
            background-color: rgb(199, 3, 97);
            color: #fff;
            border-radius: 3em;
            padding: 8px 15px;
            border: none;
            cursor: pointer;
            display: inline-block;
            width: 8.5em;
            text-decoration: none;
        }
        
        #reset_btn {
            text-transform: uppercase;
            width: 10em;
            height: 2.2em;
            background: rgb(22, 177, 153);
            border: 0px solid rgb(22, 177, 153);
            border-radius: 50px;
            cursor: pointer;
            margin-top: 20px;
            color: rgb(255, 255, 255);
            font-size: 1.111em;
            font-weight: bold;
            text-decoration: none;
        }
        
        #reset:hover {
            background-color: rgb(22, 177, 105);
        }
        
        .rem_pass {
            color: #fff;
        }
        
        .confirm {
            color: #fff;
        }
        
        .miss_pw {
            margin-top: 20px;
        }
        
        .submit_btn {
            display: flex;
            justify-content: center;
        }
        
        @media screen and (max-width: 960px) {
            .submit_btn {
                display: flex;
                justify-content: center;
            }
            .form {
                font-family: Arial, sans-serif;
                line-height: 1.5rem;
                box-sizing: border-box;
                border: 1px solid rgb(204, 204, 204);
                border-radius: 5px;
                padding: 10px 5px;
                width: 300px;
                margin-right: 5px;
                margin-bottom: 10px;
            }
        }
        
        @media screen and (max-width: 520px) {
            .submit_btn {
                display: block;
            }
            .form {
                font-family: Arial, sans-serif;
                line-height: 1.5rem;
                box-sizing: border-box;
                border: 1px solid rgb(204, 204, 204);
                border-radius: 5px;
                padding: 10px 5px;
                width: 60%;
                margin-right: 5px;
                margin-bottom: 10px;
            }
            .submit_box {
                width: 80%;
            }
            #auth_btn {
                width: 250px;
                margin-right: 0px;
            }
            #regist_btn {
                width: 250px;
                margin-left: 0px;
            }
        }