body {
    font-family: 'Arial', sans-serif;
    background-color: #f8f8f8;
    margin: 0;
    padding: 40px 0;
    display: flex;
    justify-content: center;
    color: #333;
}

.container {
    width: 550px;
    height: 750px;
    padding: 30px;
    border-radius: 12px;
    background-color: #fff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.logo{display:flex; justify-content: center; align-items: center;}
.logo span{color:#1e90ff;}
.logo h3{margin:12px auto 12px auto;
		 font-size:24px;}

#usernameGroup{margin-top:10px;}

.input-group {
    margin-bottom: 15px;
    position: relative;
}

.input-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: bold;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid #bbb;
    border-radius: 6px;
    /*background-color: #3a3a3a;
    color: #ffffff;*/
    box-sizing: border-box;
}

.input_email > input
{
	width: 75%;
}
.input_verification_code > input
{
	width: 35%;
}

.input-group input:focus {
	outline:none;
	border-color:#1e90ff;
}

.input-group.error input {
    border-color: red;
}

.error-message {
    color: red;
    font-size: 13px;
    margin-top: 5px;
}

#btn_submit{
    width: 100%;
    padding: 12px;
    background-color:#1e90ff;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    margin-top:5px;
}

#btn_send{
    width: 22%;
    padding: 8px; margin-left:10px;
    background-color:#1e90ff;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    margin-top:5px;
}

#btn_ver_code{
    width: 22%;
    padding: 8px; margin-left:10px;
    background-color:#1e90ff;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    margin-top:5px;
}
#btn_submit,#btn_send :hover {
    background-color:#1e90ff;
    text-decoration: underline;
}
@keyframes rotate360 {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.rotate1 {
    animation: rotate360 2s linear infinite; /* 무한 반복 */
}

/* Å©·Ò, »çÆĸ®, ¿§Áö */
input[type=number]::-webkit-inner-spin-button, 
input[type=number]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* ÆÄÀ̾îÆø½º */
input[type=number] {
    -moz-appearance: textfield;
}