body {
    background-color: #e9e9e9;
}

label {
    font-weight: 600;
    display: inline-block;
    color: #6d6d6d;
}

span {
    color: #3169b1;
}


.biaoti {
    font-size: 13px;
    margin: -5px 0;
}

.biaoti > p {
    color: #e35926;
    background: #ffffff;
    border-radius: 4px;
    min-height: 14px;
    height: auto;
    padding: 8px 14px;
    border: 1px solid #ddd;
    font-size: 14px;
    line-height: 1.5;
    margin: 1em 0 0.2em;
}

.polaroid {
    padding: 22px 16px;
    max-width: 450px;
    border-radius: .5rem;
    margin: 14px 6px;
    background-color: #fff;
    margin-right: auto;
    margin-left: auto;
}


form {
    width: 100%;
    display: flex;
    align-items: center;
    margin-bottom: 25px;
    justify-content: center;
}

.button-lv {
    background: #007cef;
    background-image: linear-gradient(90deg, #006eff, #13adff);
    -webkit-box-shadow: 3px 5px 10px 0 rgba(16, 110, 253, .3);
    color: #fff;
    text-align: center;
    font-size: 16px;
    min-width: 65px;
    text-decoration: none; 
    border: 0px solid #a500ff;
    border-radius: 8px;
    font-family: pingfang SC, microsoft yahei ui, microsoft yahei, simsun, sans-serif;
    padding: 6px 16px;
    margin: 12px;
    cursor: pointer;
}

button {
    background: #007cef;
    background-image: linear-gradient(90deg, #006eff, #13adff);
    -webkit-box-shadow: 3px 5px 10px 0 rgba(16, 110, 253, .3);
    color: #fff;
    text-align: center;
    font-size: 16px;
    min-width: 65px;
    border: 0px solid #a500ff;
    border-radius: 8px;
    font-family: pingfang SC, microsoft yahei ui, microsoft yahei, simsun, sans-serif;
    padding: 6px 16px;
    margin: 12px;
    cursor: pointer;
}

input {
    height: 26px;
    width: 65%;
    font-size: 13px;
    border: 1px solid #888888;
    border-radius: .3rem;
    padding: 4px 12px 2px;
}

input:focus {

    border: 1px solid #2e89ff;

}

/* 适配小于等于697px宽度的屏幕 */
@media screen and (max-width: 697px) {
    .polaroid {
    margin-right: 3px;
        margin-left: 3px;
}}

/* 适配698px到953px宽度的屏幕 */
@media screen and (min-width: 698px) and (max-width: 1293px) {
    .polaroid {
    width: 55%;
}}

/* 适配大于等于954px宽度的屏幕 */
@media screen and (min-width: 1294px) {
    .polaroid {
    width: 40%;
}}