.sign-area {
    width: 600px;
    background-color: #F7F9FC;
    margin: 100px auto;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 30px;
    padding: 30px;
    box-sizing: border-box;
}

.sign-area .title {
    display: inline-block;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 30px;
}

.input-area {
    display: flex;
    justify-content: space-evenly;
}

.sign-input {
    display: flex;
    flex-direction: column;
    color: #2A2A2A;
    font-size: 13px;
}

.sign-input input {
    margin-bottom: 10px;
}

.sign-input select {
    margin-bottom: 10px;
}

.sign-input input,
.sign-input select {
    box-sizing: border-box;
    border: 1px solid #c7cacf;
    background: #f6f6f6;
    padding: 11px 32px 11px 7px;
    border-radius: 5px;
    background: #fff;
    margin-top: 5px;
    box-sizing: border-box;
}

.sign-input select {
    margin-top: 2px;
}

.sign-btn {
    display: block;
    margin: 0 auto;
    width: fit-content;
    background-color: #4351FF;
    padding: 7px 40px;
    border-radius: 25px;
    color: #fff;
    font-weight: 500;
    margin-top: 20px;
    border: none;
}

.sign-btn:hover {
    background-color: #5a67ff;
    cursor: pointer;
}

.error {
    background-color: red;
    border-radius: 30px;
    padding: 10px;
    text-align: center;
    color: #fff;
    font-weight: 500;
    margin-bottom: 20px;
}

@media (max-width:430px) {
    .sign-area {
        width: 400px;
    }

    .input-area {
        display: block;
    }
}