html,
body {
    padding: 0px;
    margin: 0;
    -webkit-appearance: none !important;

    font-family: "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
}

.header {
    width:100%;
    height: 70px;
    border-bottom: 2px solid #000;
    line-height: 50px;
    padding: 10px 15px;
    box-sizing: border-box;
    font-size: x-large;

    user-select: none;
}

.section {
    width: 100%;
    height: calc(100vh - 70px);
    padding: 10px 15px;
    box-sizing: border-box;
    text-align: center;
}

.bigIcon {
    width: 150px;
    height: 150px;
    margin: 5px auto;
    display: block;
    border:2px solid #000;
    border-radius: 5px;
    overflow: hidden;
}

.startForm {
    width: 95%;
    max-width: 850px;
    height: fit-content;
    margin: 0 auto;
    box-sizing: border-box;
    
    border:2px solid #000;
    padding:10px;

    user-select: none;
}

.btn {
    border:2px solid #000;
    padding: 10px 15px;
    border-radius: 5px;
    background-color: #fff;
    color: #000;
    font-size: medium;
}