html,
body {
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
    touch-action: none;
    overflow: hidden;
}

body {
    margin: 0;
    background: #b11e0a;
    background-size: 100% 100%;
}

img {
    /* 点击穿透 */
    pointer-events: none;
}

.root {
    background: #b11e0a url("../images/title_bg.jpg") no-repeat center center;
    background-size:cover;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100vw;
}

#loading {
    visibility: hidden;
    display: flex;
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: 9;
    background: url("../images/loading.png") no-repeat center center;
    /*background-size: 2em 2em;*/
    touch-action: none;
    overflow: hidden;
    pointer-events: none;
}

.content {
    /* background-color: rgba(20, 20, 20, 0.2); */
    visibility: hidden;
    width: 100vw;
    height: 100vh;
    max-width: 76vh;
    max-height: 100vh;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.title-image {
    /* background-color: rgba(200, 0, 0, 0.2); */
    align-self: center;
    height: 30vh;
    width: 70%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.main-area {
    /* background-color: rgba(0, 200, 0, 0.2); */
    display: flex;
    width: 100%;
    height: 0vh;
}

.title-image img {
    display: block;
    width: 100%;
}

.btn-area {
    /* background-color: rgba(0, 0, 200, 0.2); */
    display: flex;
    height: 30vh;
    width: 90%;
    justify-content: center;
    align-items: center;
}

.send-btn {
    /* background-color: lightblue; */
    display: flex;
    align-self: center;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: 50%;
}

.send-btn img {
    /*background-color: yellow;*/
    display: block;
    width: 100%;
}