* {
    margin: 0;
    padding: 0;
}

.bg {
    width: 100%;
    min-height: 100vh;
    background: url('../img/bg.png') 0 0/100% 100% no-repeat;
    padding-top: 15vw;
}

.phone {
    margin: 0 auto;
    display: block;
    width: 80%;
    height: auto;
}

.tips_box {
    box-sizing: border-box;
    margin: 4vw auto 0;
    width: 90vw;
    background: #F5F5F5;
    border-radius: 10px 10px 10px 10px;
    border: 1px dashed #1A1A1A;
    padding: 4vw;
    font-size: 3.7vw;
    line-height: 5vw;
}

.btn {
    box-sizing: border-box;
    margin: 6vw auto 0;
    width: 76vw;
    height: 13vw;
    background: #FF9C00;
    border-radius: 13vw;
    line-height: 13vw;
    text-align: center;
    font-family: SourceHanSansCN-Regular, SourceHanSansCN-Regular;
    font-weight: normal;
    font-size: 4vw;
    color: #FFFFFF;
}